# Physics - Onslow College

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FORM:
Level 3 NCEA Physics
13PHX
2015
Student Information
Science Department
Onslow College
2015 Timeline – NCEA Level 3 Physics (13PHX)
Term 1
eV / Waveparticle duality
/ H energy
levels
Binding E /
Mass deficit /
Fundamental
forces /
3.5 TEST
3
4
7
9-13
6
16-20
8 (Summ Tourn Wk)
23-27
Universal
gravitation /
Satellites / Vert
circles
Conical
pendulum /
banked corners
etc
θ, ω, α / Rot
kinematics /
Torque /
Rot inertia
9
30-Apr 3
Easter
Bohr model /
Rydberg
formula / P.E.
effect
5
Mar 2-6
Angular
momentum
4
23-27
AS 3.5
3
16-20
2D
momentum
/ impulse /
C.O.M.
2
9-13
Waitangi
H spectrum
st
Snr 1 day
Wed
1
Feb 2-6
Term 2
3.1
Graphical
Analysis
7
June 1-5
25-29
Damped &amp;
forced SHM /
resonance /
Energy / MECH
TEST 2
D.C. / I / V
/ Ohm /
Kirchoff
SeriesParallel /
Multiloop/
Resistance
8
8-12
9
15-19
Uncertainty
calculations
10
22-26
Comparison /
Discussion 3.1
formative
Internal
resistance /
Capacitance /
networks
Term 3
3
Aug 3-7
4
5
10-14
Magnetic
fields / flux /
Lenz’s law /
Induction /
Farday’s law
Transformer /
mutual
inductance /
Inductors
2
3
17-21
Selfinductance /
‘flux’ &amp;
‘disflux’ / τ /
Energy
6
24-28
AC / rms / RC
circ. / phasor /
VC,VR,VS
Xc &amp; Z / RL circ.
/ phasor / XL &amp; Z
5
6
7 (Wint Tourn Wk)
31-Sept 4
LCR circ. /
resonance
ELEC TEST
Cap charge &amp;
discharge / τ /
Energy
2
27-31
TOD
1
20-24
8
9
14-18
21-25
Waves /
transv &amp; long.
/ reflections /
superposition
Standing waves
/ harmonics /
strings / open &amp;
closed pipes
Diffraction /
interference /
formulae
Term 4
9-13
NZQA
EXAMS
BEGIN
16-20
TOD
11/12 last
day Wed
13 last day
Revision
4
Nov 2-6
26-30
Revision
Doppler
effect / redshift / beats
WAVES TEST
19-23
LD
1
Oct 12-16
7
23-27
10
7-11
8
30-Dec 4
9
7-11
11
29-July 3
3.1 prep
AS 3.1
Hooke’s law /
mass on spring
/ pendulum
18-22
6
QB
11-15
5
TOD
Rot Ek / Rolling
objects /
MECH TEST 1
4-8
SHM properties
/ y,v,a formulae
phase / phasor
diagram
20-24
2
27-May 1
ANZAC
1
3
Useful Constants

G = 6.67 &times; 10-11 Nm2kg-2
(universal gravitational constant)

g = -9.81 ms-2
(gravitational acceleration at Earth’s surface)

c = 3.00 &times; 108 ms-1
(speed of light in a vacuum)

εo = 8.84 &times; 10-12 Fm-1
(permittivity of free space)

μo = 1.26 &times; 10-6 TmA-1
(permeability of free space)

e = -1.6 &times; 10-19 C
(charge of an electron)

me = 9.11 &times; 10-31 kg
(mass of an electron)

mp = 1.6726 &times; 10-27 kg
(mass of a proton)

mn = 1.6748 &times; 10-27 kg
(mass of a neutron)

1 a.m.u. = 1.66 &times; 10-27 kg
(atomic mass unit)

k = 2 &times; 10-7 NA-2
(magnetic constant)

k = 9 &times; 109 Nm2C-2
(electric constant)

h = 6.63 &times; 10-34 Js
(Planck’s constant)

R = 1.097 &times; 107 m-1
(Rydberg’s constant)

rE ≈ 6370 km

mE = 5.98 &times; 1024 kg
(mass of the Earth)

ms = 2 &times; 1030 kg
(mass of the Sun)

A.U. ≈ 150 million km
(astronomical unit = average Earth – Sun distance)
Numerical Prefixes
c
centi - &times; 10-2
d
deca - &times; 101
m
milli - &times; 10-3
h
hecto - &times; 102

micro - &times; 10-6
k
kilo - &times; 103
n
nano - &times; 10-9
M
mega - &times; 106
p
pico - &times; 10-12
G
giga - &times; 109
f
femto -&times; 10-15
T
terra - &times; 1012
a
atto - &times; 10-18
4
NCEA Level 3 Physics Formula Sheet
5
6
13 Physics Symbols
Symbol
a
A
A
B
C
d
d
E
E
f
f’
F
I
I
k
L/l
L
L
L
m
M
n
n
N
Q/q
r
R
S
t
T
v
V
vs
vw
x
X
y
Z
α
ε
θ
λ
τ
τ
φ
φ
ω
Quantity
acceleration
amplitude
area
magnetic field strength
capacitance
distance / displacement
slit separation
energy
electric field strength
frequency
apparent frequency
force
current
rotational inertia
spring constant
length
angular momentum
self inductance
line number
mass
mutual inductance
order of maxima / minima
shell number
number of turns
charge
resistance
series number
time
period
velocity
voltage
source velocity
wave velocity
distance to nth maxima
reactance
displacement
impedance
angular acceleration
EMF
angular displacement
wavelength
torque
time constant
flux
work function
angular velocity
SI Unit
-2
ms
m
2
m
T
F
m
m
J / eV
-1
-1
NC /Vm
Hz
Hz
N
A
2
kgm
-1
Nm
m
2 -1
kgm s
H
kg
H
C
m
Ω
s
s
-1
ms
V
-1
ms
-1
ms
m
Ω
m
Ω
-2
V
m
Nm
s
Wb
J / eV
-1
7
Identify the key Physics idea/s
Step 1
What key physics idea/s is being assessed by this question? What are the key words in
the question? Read the question carefully at least twice. Read the title of the question.
eg Equilibrium
State the facts
Step 2
Write down facts about the physics idea/s. Are there any relevant diagrams, graphs,
formulae, etc?
eg Motion stays the same – constant speed, direction &amp; rotation. Total force is 0, Fup =
Fdown. Total torque is 0, τcw = τacw. τ = Fd.
Link the facts to the question
Step 3
eg Is the question asking for a definition of equilibrium, an explanation of the conditions
necessary for equilibrium, a description of the concepts needed to calculate a value,
or something else?
Be specific. Use examples, diagrams and/or bullet points where appropriate.
This is not an English exam. More words doesn’t necessarily imply a better answer.
Communicate the Physics clearly.
Review the question
Step 4
Context of question
Effect caused
Key
Concept
8
Onslow College NCEA Level 3 PHYSICS
Level 3 Physics is a full year course that contributes Level 3 credits for NCEA.
The work done throughout the year is assessed in two ways:
 Internal assessment (I) - practical work, report writing, and tests that are carried out during the
year.
 External assessment (E) - exam at the end of the year.
Achievement Standards
The assessments will be made up from five achievement standards each worth between 3 and 6 credits for a
total of 23 credits. The achievement standards are described in the table below.
Standard
Version
Achievement Standard Title
Credits
Internal
External
UE LIT
UE LIT
Write
91521 (3.1)
1
Carry out a practical investigation to test a
physics theory relating two variables in a nonlinear relationship
4
Internal
x
x
91523 (3.3)
1
Demonstrate understanding of wave systems
4
External
x
x
91524 (3.4)
1
Demonstrate understanding of mechanical
systems
6
External
x
x
91525 (3.5)
1
Demonstrate understanding of Modern Physics
3
Internal
x
x
91526 (3.6)
1
Demonstrate understanding of electrical
systems
6
External
x
x
Total number of credits: 23
The result of each assessment will be one of four grades:
Not Achieved (N), Achieved (A), Merit (M), Excellence (E).
Assessment
Formative tests will be carried out occasionally, usually once or twice a term.
There will be one summative assessment opportunity for the external standards in November. There will be
practice assessment opportunities for these external standards in class and during school exams.
We offer two level 3 Physics internal achievement standards.
Physics 3.1
“Carry out a practical investigation to test a physics theory relating two variables in a non-linear
relationship” will be assessed by a practical experiment and written report during
(approximately) Week 9 of Term 2. There will NOT be a reassessment opportunity for this
standard, but there will be opportunity for students to resubmit their work if a small error is
preventing them from getting a higher grade.
Physics 3.5
“Demonstrate understanding of Modern Physics” will be assessed by an in-class written test
during (approximately) Week 5 of Term 1. There will be a reassessment opportunity for this
standard outside of school time.
If you are sick or legitimately absent for either assessment, you will need to discuss this with your teacher as
soon as possible. See pages 14 -17 of your Onslow College NCEA Information Booklet.
9
13 Physics
Topic 1
Modern Physics
4 weeks approx
Standard Content
Examples of phenomena, concepts, or principles of Modern Physics include:
 the Bohr model of the hydrogen atom: the photon; the quantisation of energy; discrete
atomic energy levels; electron transition between energy levels; ionisation; atomic line
spectra, the electron volt
 the photoelectric effect
 wave-particle duality
 qualitative description of the effects of the strong interaction and Coulombic repulsion,
binding energy and mass deficit; conservation of mass-energy for nuclear reactions
 qualitative treatment of special and general relativity
 qualitative treatment of quarks and leptons.
Achievement Standard 91525 version 1
Physics AS3.5 Credits: 3
Internal
Demonstrate understanding of Modern Physics
Assessment
Formative assessment:
Test 1, Term 1
Summative assessment:
In class test, Week 5, Term 1
10
13 Physics
Topic 2
Mechanics
7 weeks approx
Standard Content
Translational Motion
Centre of mass (1 and 2 dimensions); conservation of momentum and impulse (2 dimensions
only).
Circular Motion and Gravity
Velocity and acceleration of, and resultant force on, objects moving in a circle under the
influence of 2 or more forces, Newton’s Law of gravitation, satellite motion.
Rotating Systems
Rotational motion with constant angular acceleration; torque; rotational inertia; conservation of
angular momentum; conservation of energy.
Relationships
d  r


t
f  i  t
  
a  r
  2f
EK ( ROT )  12 2

i  f  t
2
L  mvr
Achievement Standard 91524 version 1 (part)
Physics AS3.4 Credits: 6

v  r
External
Demonstrate understanding of mechanical
systems

t
f  i  2
  i t  12 t 2
L  
Fg 
2
2
GMm
r2
Assessment
Formative assessment:
Test 2, Term 1
School exams, Week 8, Term 3
Summative assessment:
NZQA exams, November
11
13 Physics
Topic 3
Simple Harmonic Motion
3 weeks approx
Standard Content
Oscillating Systems
The conditions for Simple Harmonic Motion, angular frequency, variation of displacement,
velocity and acceleration with time, phasor diagrams, reference circles, damped and driven
systems, resonance, conservation of energy.
Relationships
l
g
T  2
m
k
  2f
T  2
y  A sint
v  A cos t
a   A2 sint
y  A cos t
v   A sint
a   A2 cos t
Achievement Standard 91524 version 1 (part)
Physics AS3.4 Credits: 6
External
Demonstrate understanding of mechanical
systems
a   2 y
Assessment
Formative assessment:
Test 3, Term 2
School exams, Week 8, Term 3
Summative assessment:
NZQA exams, November
12
13 Physics
Topic 4
DC Electricity &amp; Capacitors
4 weeks approx
Standard Content
Resistors in DC Circuits
Internal resistance; simple application of Kirchhoff’s Laws.
Capacitors in DC Circuits
Parallel plate capacitor; capacitance; dielectrics; series and parallel capacitors; charge/time,
voltage/time and current/time graphs for a capacitor; time constant; energy stored in a
capacitor.
Relationships:
E  12 QV
Q  CV
1
1
1



CT C1 C2
C
o r A
d
V  Z
Achievement Standard 91526 version 1 (part)
Physics AS3.6 Credits: 6
CT  C1  C2  
External
Demonstrate understanding of electrical systems
Assessment
Formative assessment:
Test 4, Term 2
School exams, Week 8, Term 3
Summative assessment:
NZQA exams, November
  RC
13
13 Physics
Topic 5
Practical Investigation
3 weeks approx
Standard Content
Carry out a practical investigation involves:
 collecting data relevant to the aim based on the manipulation of the independent variable
over a reasonable range and number of values
 determining appropriate uncertainties in raw data
 using graphical analysis, including a consideration of uncertainties, from which the equation
of the relationship/value of the physics quantity can be determined
 providing a conclusion that states the equation of the relationship/value of the physics
quantity as determined from the graph and includes a comparison with the physics theory.
Carry out an in-depth practical investigation involves:
 describing the control of other variable(s) that could significantly affect the results
 using techniques to improve the accuracy of measurements
 determining uncertainties in one of the variables expressed in the graphical analysis
 graphical analysis which expresses the uncertainty in the relationship consistent with the
uncertainty in the data
 providing a conclusion that makes a quantitative comparison between the physics theory
and the relationship/quantity obtained from the experimental data which includes
consideration of uncertainties.
Carry out a comprehensive practical investigation involves a discussion which addresses issues critical
to the practical investigation, such as:
 the other variable(s) that could have changed and significantly affected the results, and how
they could have changed the results
 the limitations to the theory’s applicability both in the practical situation and/or at extreme
values of the independent variable
 any unexpected outcomes of the processing of the results and a suggestion of how they
could have been caused and the effect they had on the validity of the conclusion.
A practical investigation is an activity that includes gathering, processing and interpreting data.
The variables under investigation should have a non-linear relationship according to a physics theory
Achievement Standard 91521 version 1
Physics AS3.1 Credits: 4
Internal
Carry out a practical investigation to test a
physics theory relating two variables in a nonlinear relationship
Assessment
Formative assessment:
In class, Term 2
Summative assessment:
Extended assessment period, Week 10,
Term 2
14
13 Physics
Topic 6
Electromagnetism &amp; Inductors
3 weeks approx
Standard Content
Inductors in DC Circuits
Magnetic flux; magnetic flux density; Faraday’s Law; Lenz’s Law; the inductor; voltage/time and
current/time graphs for an inductor; time constant; self inductance; energy stored in an
inductor; the transformer.
Relationships:
  BA
Np
Ns

Vp
Vs
  L
E

t
1 2
L
2
Achievement Standard 91526 version 1 (part)
Physics AS3.6 Credits: 6
External
Demonstrate understanding of electrical systems


L
R

t
V  Z
Assessment
Formative assessment:
School exams, Week 8, Term 3
Summative assessment:
NZQA exams, November
15
13 Physics
Topic 7
A.C. Electricity
3 weeks approx
Standard Content
AC Circuits
The comparison of the energy dissipation in a resistor carrying direct current and alternating
current; peak and rms voltage and current; voltage and current and their phase relationship in
LR and CR series circuits; phasor diagrams; reactance and impedance and their frequency
dependence in a series circuit; resonance in LCR circuits.
Relationships:
   MAX sin t
V  VMAX sint
1
C
VMAX  2 Vrms
XC 
V  Z
 = 2f
Achievement Standard 91526 version 1 (part)
Physics AS3.6 Credits: 6
External
Demonstrate understanding of electrical systems
 MAX  2  rms
X L  L
Assessment
Formative assessment:
School exams, Week 8, Term 3
Summative assessment:
NZQA exams, November
16
13 Physics
Topic 8
Waves
5 weeks approx.
Standard Content
Interference (quantitative) of electromagnetic and sound waves, including multi-slit interference and
diffraction gratings; standing waves in strings and pipes; harmonics; resonance; beats; Doppler Effect
(stationary observer for mechanical waves).
Relationships:
d sinθ  nλ
nλ 
dx
L
Achievement Standard 91523 version 1
Physics AS3.3 Credits: 4
External
Demonstrate understanding of wave systems
ff
vw
vw  vs
Assessment
Formative assessment:
Test 5, Term 4
Summative assessment:
NZQA exams, November
17
Achievement Standard 91521
Subject Reference
Physics 3.1
Title
Carry out a practical investigation to test a physics theory relating
two variables in a non-linear relationship
Level
3
Credits
4
Assessment
Internal
This achievement standard involves carrying out a practical investigation to test a physics theory
relating two variables in a non-linear relationship.
Achievement Criteria
Achievement
Achievement with Merit
Achievement with Excellence
 Carry out a practical
investigation to test a
physics theory relating
two variables in a nonlinear relationship.
 Carry out an in-depth
practical investigation to test
a physics theory relating two
variables in a non-linear
relationship.
 Carry out a comprehensive
practical investigation to test a
physics theory relating two
variables in a non-linear
relationship.
Explanatory Notes
1
Carry out a practical investigation involves:
 collecting data relevant to the aim based on the manipulation of the independent variable
over a reasonable range and number of values
 determining appropriate uncertainties in raw data
 using graphical analysis, including a consideration of uncertainties, from which the equation
of the relationship/value of the physics quantity can be determined
 providing a conclusion that states the equation of the relationship/value of the physics
quantity as determined from the graph and includes a comparison with the physics theory.
Carry out an in-depth practical investigation involves:
 describing the control of other variable(s) that could significantly affect the results
 using techniques to improve the accuracy of measurements
 determining uncertainties in one of the variables expressed in the graphical analysis
 graphical analysis which expresses the uncertainty in the relationship consistent with the
uncertainty in the data
 providing a conclusion that makes a quantitative comparison between the physics theory
and the relationship/quantity obtained from the experimental data which includes
consideration of uncertainties.
Carry out a comprehensive practical investigation involves a discussion which addresses issues
critical to the practical investigation, such as:
 the other variable(s) that could have changed and significantly affected the results, and how
they could have changed the results
18


the limitations to the theory’s applicability both in the practical situation and/or at extreme
values of the independent variable
any unexpected outcomes of the processing of the results and a suggestion of how they
could have been caused and the effect they had on the validity of the conclusion.
2
A practical investigation is an activity that includes gathering, processing and interpreting data.
3
The variables under investigation should have a non-linear relationship according to a physics
4
Conditions of Assessment related to this achievement standard can be found at
www.tki.org.nz/e/community/ncea/conditions-assessment.php.
19
Achievement Standard 91523
Subject Reference
Physics 3.3
Title
Demonstrate understanding of wave systems
Level
3
Credits
4
Assessment
External
This achievement standard involves demonstrating understanding of wave systems.
Achievement Criteria
Achievement
Achievement with Merit
Achievement with Excellence
 Demonstrate understanding
of wave systems.
 Demonstrate in-depth
understanding of wave
systems.
 Demonstrate comprehensive
understanding of wave systems.
Explanatory Notes
1
This achievement standard is derived from The New Zealand Curriculum, Learning Media, Ministry of
Education, 2007, Level 8. The standard is aligned to Physical inquiry and physics concepts in the Physical
World strand and Communicating in science in the Nature of Science strand, and is related to the
material in the Teaching and Learning Guide for Physics, Ministry of Education, 2010 at
http://seniorsecondary.tki.org.nz.
2
Demonstrate understanding involves showing an awareness of how simple facets of phenomena,
concepts, or principles relate to a given situation.
Demonstrate in-depth understanding involves giving explanations for phenomena, concepts, or principles
that relate to a given situation.
Demonstrate comprehensive understanding involves connecting concepts or principles that relate to a
given situation.
3
Wave systems include mathematical solutions and/or written descriptions. Written descriptions may
include graphs or diagrams.
4
Assessment is limited to a selection from the following:
Interference (quantitative) of electromagnetic and sound waves, including multi-slit interference and
diffraction gratings; standing waves in strings and pipes; harmonics; resonance; beats; Doppler Effect
(stationary observer for mechanical waves).
Relationships:
d sinθ  nλ
nλ 
dx
L
ff
vw
vw  vs
20
Achievement Standard 91524
Subject Reference
Physics 3.4
Title
Demonstrate understanding of mechanical systems
Level
3
Credits
6
Assessment
External
This achievement standard involves demonstrating understanding of mechanical systems.
Achievement Criteria
Achievement
Achievement with Merit
Achievement with Excellence
 Demonstrate
understanding of
mechanical systems.
 Demonstrate in-depth
understanding of
mechanical systems.
 Demonstrate comprehensive
understanding of mechanical
systems.
Explanatory Notes
1
Demonstrate understanding involves showing an awareness of how simple facets of
phenomena, concepts, or principles relate to a given situation.
Demonstrate in-depth understanding involves giving explanations for phenomena, concepts, or
principles that relate to a given situation.
Demonstrate comprehensive understanding involves connecting concepts or principles that
relate to a given situation.
2
Mechanical systems include mathematical solutions and/or written descriptions. Written
descriptions may include graphs or diagrams.
3
Assessment is limited to a selection from the following:
Translational Motion
Centre of mass (1 and 2 dimensions); conservation of momentum and impulse (2 dimensions
only).
Circular Motion and Gravity
Velocity and acceleration of, and resultant force on, objects moving in a circle under the
influence of 2 or more forces, Newton’s Law of gravitation, satellite motion.
Rotating Systems
Rotational motion with constant angular acceleration; torque; rotational inertia; conservation of
angular momentum; conservation of energy.
21
Oscillating Systems
The conditions for Simple Harmonic Motion, angular frequency, variation of displacement,
velocity and acceleration with time, phasor diagrams, reference circles, damped and driven
systems, resonance, conservation of energy.
Relationships
d  r


t
f  i  t
  
T  2
l
g

v  r
a  r
  2f
EK ( ROT )  12 2

i  f  t
2
L  mvr
T  2

t
f  i  2
  i t  12 t 2
L  
Fg 
a   2 y
2
2
GMm
r2
m
k
y  A sint
v  A cos t
a   A2 sint
y  A cos t
v   A sint
a   A2 cos t
22
Achievement Standard 91525
Subject Reference
Physics 3.5
Title
Demonstrate understanding of Modern Physics
Level
3
Credits
3
Assessment
Internal
This achievement standard involves demonstrating understanding of Modern Physics.
Achievement Criteria
Achievement
Achievement with Merit
Achievement with Excellence
 Demonstrate
understanding of Modern
Physics.
 Demonstrate in-depth
understanding of Modern
Physics.
 Demonstrate comprehensive
understanding of Modern
Physics.
Explanatory Notes
1
Demonstrate understanding involves showing an awareness of how simple facets of
phenomena, concepts, or principles relate to a given situation.
Demonstrate in-depth understanding involves giving explanations for phenomena, concepts, or
principles that relate to a given situation.
Demonstrate comprehensive understanding involves demonstrating understanding of
connections between concepts or principles that relate to a given situation.
2
Examples of phenomena, concepts, or principles of Modern Physics include:
 the Bohr model of the hydrogen atom: the photon; the quantisation of energy; discrete
atomic energy levels; electron transition between energy levels; ionisation; atomic line
spectra, the electron volt
 the photoelectric effect
 wave-particle duality
 qualitative description of the effects of the strong interaction and Coulombic repulsion,
binding energy and mass deficit; conservation of mass-energy for nuclear reactions
 qualitative treatment of special and general relativity
 qualitative treatment of quarks and leptons.
3
Conditions of Assessment related to this achievement standard can be found at
www.tki.org.nz/e/community/ncea/conditions-assessment.php.
23
Achievement Standard 91526
Subject Reference
Physics 3.6
Title
Demonstrate understanding of electrical systems
Level
3
Credits
6
Assessment
External
This achievement standard involves demonstrating understanding of electrical systems.
Achievement Criteria
Achievement
Achievement with Merit
Achievement with Excellence
 Demonstrate
understanding of electrical
systems.
 Demonstrate in-depth
understanding of electrical
systems.
 Demonstrate comprehensive
understanding of electrical
systems.
Explanatory Notes
1
Demonstrate understanding involves showing an awareness of how simple facets of
phenomena, concepts, or principles relate to a given situation.
Demonstrate in-depth understanding involves giving explanations for phenomena, concepts, or
principles that relate to a given situation.
Demonstrate comprehensive understanding involves connecting concepts or principles that
relate to a given situation.
2
Electrical systems include mathematical solutions and/or written descriptions. Written
descriptions may include graphs or diagrams.
3
Assessment is limited to a selection from the following:
Resistors in DC Circuits
Internal resistance; simple application of Kirchhoff’s Laws.
Capacitors in DC Circuits
Parallel plate capacitor; capacitance; dielectrics; series and parallel capacitors; charge/time,
voltage/time and current/time graphs for a capacitor; time constant; energy stored in a
capacitor.
Inductors in DC Circuits
Magnetic flux; magnetic flux density; Faraday’s Law; Lenz’s Law; the inductor; voltage/time and
current/time graphs for an inductor; time constant; self inductance; energy stored in an
inductor; the transformer.
24
AC Circuits
The comparison of the energy dissipation in a resistor carrying direct current and alternating
current; peak and rms voltage and current; voltage and current and their phase relationship in
LR and CR series circuits; phasor diagrams; reactance and impedance and their frequency
dependence in a series circuit; resonance in LCR circuits.
Relationships:
E  12 QV
1
1
1



CT C1 C2
Q  CV
C
  BA
Np
Ns
4
o r A
d

Vp
Vs
   MAX sin t
V  VMAX sint
VMAX  2 Vrms
XC 
X L  L
V  Z
CT  C1  C2  
  L
E

t
1 2
L
2
  RC



t
L
R
 MAX  2  rms
1
C
 = 2f
Assessment Specifications for this achievement standard can be accessed through the Physics
Resources page found at http://www.nzqa.govt.nz/qualificationsstandards/qualifications/ncea/subjects/.
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