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WorksheetsOhm's Law Practice
Total questions: 40
Worksheet time: 1hrs 20mins
What is the scientific formula for ohm's law?
V=IR
I=VR
R=IV
None of the above
(I X R)
Voltage divided by Current
(V / I)
Current
Power
Resistance
Watts
Voltage divided by Resistance
(V / R)
Current
Power
Ohms
Watts
What is the Voltage of a circuit that has a resistance of 8 Ω and a current of 2 A?
25 V
16 V
2.5 V
0.4 V
If the battery produced 12.6 Volts what would be the current flow for a 6 Ohm resistor?
2.1 Amps
2.4 Amps
1.71 Amps
15 Amps
If a 100 Ω resistor is connected to 200 V, what is the current through the resistor?
100 A
2 A
300 A
50 A
If a 2 Ω resistor is connected to 12 V, what is the current through the resistor?
3 A
4 A
5 A
6 A
If a 15 Ω resistor is connected to 30 V, what is the current through the resistor?
2 A
4 A
6 A
8 A
If a current of 2 A flows through a 50 Ω resistor, what is the voltage across the resistor?
2 V
50 V
100 V
150 V
If a current of 20 A flows through a 5 Ω resistor, what is the voltage across the resistor?
2 V
50 V
100 V
150 V
If a current of 1 A flows through a 2 Ω resistor, what is the voltage across the resistor?
2 V
50 V
100 V
150 V
If a current of 3 A flows through a resistor connected to 90 V, what is the resistance?
3 Ω
20 Ω
30 Ω
90 Ω
If a current of 2 A flows through a resistor connected to 40 V, what is the resistance?
3 Ω
20 Ω
30 Ω
90 Ω
If a current of 20 A flows through a resistor connected to 80 V, what is the resistance?
3 Ω
20 Ω
30 Ω
4 Ω
A fan is drawing 2 amps and has 4.5 ohms of resistance, what is the voltage of its power source.
9 V
2.25 V
0.44 V
6.5 V
In an electrical circuit, if the current is 2 A and the resistance is 20 ohms, what is the voltage?
40 V
400 V
10 V
0.1 V
An alarm clock draws 0.5A of current when connected to a 120V circuit. Calculate its resistance.
60Ω
240Ω
240 V
60 A
If a toaster produces 12Ω of resistance in a 120-volt circuit, what is the amount of current in the circuit?
10A
10Ω
144A
144Ω
A 12 Volt car battery pushes charge through the headlight circuit resistance of 10Ω. How much current is passing through the circuit?
1.2 A
0.12 Ω
120 A
120 V
The resistance of a light bulb in a flashlight is 5 Ω. When the flashlight is switched on there is 14.3 A of current flowing. What is the voltage of the battery?
71.5 V
71.5 A
2.86 V
2.86 A
Find the Voltage
50 V
5V
40 A
2 A
24 Ω
600 Ω
24 V
25 A
1.2 A
1.2 Ω
120 A
120 Ω
0.05 A
11,520 A
2 A
A fan needs a current of 15 A. The battery supplies the circuit with 1.5 V. What is the resistance of the motor?
0.1 Ω
22.5 Ω
0.1 A
A flashlight has several batteries supplying 30V which results in a current of 6.0 A. What is the resistance of the light bulb?
5 Ω
5 V
180 Ω
A hearing aid has a 1.5 V battery and a resistor of 0.5 Ω, what is the current?
3 A
0.75 A
10 A
2.5 A
160 A
100 A
1.2 A
1200 A
75 A
0.04 A
40 A
1400 A
