Current Electricity Assignment SPH 3U0
Part A: Chapter 11.1
1. Read pages 367 – 373, complete the table below and the following questions:
Term and
Symbol
Description
Current
I
Analogy
Unit and
symbol
Equation(s)
I = q/t
Instrument
to measure
I = V/R
Resistance
R
Potential
Difference
(voltage)
V
2. What is the difference between “conventional current” and “electron flow”?
3. What is the difference between AC and DC?
- The difference between AC and DC would be that a DC (Direct Current) is a current that is
uni-directional (follows/flows in one direction). And an AC (Alternating Current), is a current in which
the flow/direction of electric charge is one that periodically reverses it's direction - i.e, starts from, say,
zero, grows to a maximum, decreases to zero, reverses, reaches a maximum in the opposite direction,
returns to its original state, than repeats this cycle indefinitely. (taken from Brittanica - Matter and
Energy)
DC (Direct Current)
-
4. Describe Ohm’s law and state the equation. What does the slope of a voltage vs. current
graph represent?
5. Answer the practice problems: # 1-3 on page 369, #1,2 on page 372, # 1,2 on page 373
on a separate piece of lined paper.
6. Answer # 10 – 20 on page 375 on a separate piece of lined paper.
Part B: Chapter 11.2/11.3
1. Read pages 376 – 379, 381 – 383 and complete the following table and questions:
Type of
Circuit
Description
Series
Current
Resistance
Voltage
IT = I1 = I2…
Current is the
same throughout
the circuit.
Parallel
1 = 1 + 1 + ..
RT
R1 R2
Characteristics
If one load fails all
other loads in series
will ____ _____.
Since voltage is
shared between
loads, bulbs in series
will ____ as more
are added.
As loads are added
in parallel the
total resistance
decreases!
2. Answer practice problems # 1,2 as well as concept check #1,2 on page 378 on a separate
piece of lined paper.
3. Answer # 7 – 11 on page 380 on a separate piece of lined paper.
4. Answer practice problems # 1,2 on page 382, as well as concept check #1-3 on page 383
on a separate piece of lined paper.
5. Answer # 8 – 11 on page 389 on a separate piece of lined paper.
Part C: 11.3 Mixed Circuits
Read from the bottom of page 383 to 386 and answer the practice problems #1,2 on page 386,
and # 12 on page 389, # 22 – 25 on page 397on a separate piece of lined paper.
Part D: 11.4 Power Consumption
1. Read pages 390 to 394 and complete the table below and answer the following questions:
Term
Description
Unit
Equations
and
and
symbol
symbol
Power
P
When to use the equations 🡪
2. Practice problems #1,2 on pages 391, 392, 394.
3. Answer # 6 – 10, 13, 14 on page 395.