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Ohm's Law Quiz

Total questions: 20

Worksheet time: 39mins

Name
Class
Date
1.
What is the resistance, if the voltage is 9 V and the Current is 3 Amps?
a)
.33
b)
27
c)

6

d)
3
2.
What is the current if the resistance is 20 ohms, and the voltage 100 V?
a)
20 Amps
b)
5 Amps
c)
.2 Amps
d)
2000 Amps
3.
If the battery produced 12.6 Volts and what would be the current flow be for a 6 Ohm resistor
a)
2.1 Amps
b)
2.4 Amps
c)
1.71 Amps
d)
15 Amps
4.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
5.
How do you calculate voltage?
a)
Current X Resistance
b)
Resistance ÷ Current
c)
Current ÷ Resistance
d)
Measure it with a ruler
6.
How do you calculate current
a)
Resistance X Voltage
b)
Voltage X Resistance
c)
Resistance ÷ Voltage
d)
Voltage ÷ Resistance
7.
With the engine running the charging system produces 14.5 Volts what would the current flow be if a resistance of 6 Ohms was present
a)
2.41 Ohms
b)
2.52 Ohms
c)
2.1 Ohms
d)
0.3333 Ohms
8.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
9.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
10.
Resistance is
a)
an objects ability to resist Voltage
b)
an objects ability to resist resistance
c)
An objects ability to resist current
d)
An objects resistance to temptation
11.
The flow/movement of electric charges 
a)
Voltage
b)
Resistance 
c)
Current 
d)
Circuit 
12.
What is voltage measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
13.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
14.
What resistance is needed to cause a 50A current flow because of a 500V battery?
a)
10Ώ
b)
5Ώ
c)
2500Ώ
d)
550Ώ
15.

If all of the switches were closed, how many paths can the current take?

a)

4

b)

6

c)

8

d)

10

16.
This circuit has a 24 volt battery and the resistor is 8 ohms. How many amps are running through the circuit?
a)
3 Amps
b)
192 Amps
c)
2 Amps
d)
4 Amps
17.

The resistance of a circuit is doubled and the voltage stays the same. What will happen to the current?

a)

It will double

b)

It will stay the same

c)

Decrease by a factor of 1/2

d)

It will increase by a factor of 9

18.

The voltage of a circuit is doubled and the resistance stays the same. What will happen to the current?

a)

It will double

b)

It will stay the same

c)

Decrease by a factor of 1/2

d)

It will increase by a factor of 4

19.

When an ammeter is attached to this simple circuit, it reads a current of 8 A. Solve for voltage.

a)

68 V

b)

0.133 V

c)

7.5 V

d)

480 V

20.

A microwave oven uses 15 A of current when connected to a wall outlet that provides 180 V of electricity. What is the resistance of the microwave oven?

a)

12 Ω

b)

2700 Ω

c)

195 Ω

d)

0.083 Ω