1.1.1.4 Worksheet

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IT Essentia
als 5.0
1
1.1.1.4 Worksheett - Ohm’s Law
P
Print and com
mplete this worksheet.
heet, you will answer
a
questtions based on Electricity a
and Ohm’s La
aw. Show all ssteps when solving
In this worksh
p
problems.
N
Note: The amounts used in
n these proble
ems may not be realistic.
1
1. What are the four basic
c units of elec
ctricity? Provide the variab
ble name and symbol, and unit name an
nd
symbol.
2
2. Write the equation for Ohm’s
O
Law.
3
3. Re-arrang
ge the Ohm’s Law equation
n to solve the
e following:
I=
R=
4
4. Power is equal
e
to volta
age times currrent. Add the missing inforrmation in eacch of the following power e
equations.
P=V
P=R
P = V2
5
5. The yellow
w wire connec
cted to a pow
wer supply carrries 12V. If th
he power sup
pply provides 60W of powe
er to the
yellow wirre, how much current is pa
assing through
h the yellow w
wire?
are 0.025 ohm
6
6. There are
e 3.3V passing
g through an orange powe
er supply cabl e, and there a
ms of resistan
nce in the
orange wiire. How much power is su
upplied to the orange wire by the powerr supply?
7
7. A wire from the power supply is carrrying 120W of
o power and 2
24A of curren
nt. Which colo
or(s) of cable is the
wire?
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ent is Cisco Publiic.
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