Numeracy: Ohm's Law

1. What is the voltage across a resistor with a resistance of 5 ohms and a current of 2 amperes?

• 10 volts
• 7 volts
• 2.5 volts
• 15 volts

2. If the current through a 10-ohm resistor is 3 amperes, what is the voltage across it?

• 30 volts
• 13 volts
• 20 volts
• 3 volts

3. What is the voltage across a resistor with a resistance of 8 ohms and a current of 1.5 amperes?

• 12 volts
• 5 volts
• 0.53 volts
• 20 volts

4. A 20-ohm resistor has a current of 4 amperes flowing through it. What is the voltage across the resistor?

• 80 volts
• 16 volts
• 5 volts
• 40 volts

5. What is the voltage across a 2-ohm resistor with a current of 5 amperes?

• 10 volts
• 1 volt
• 7 volts
• 15 volts

6. What is the voltage across a resistor with a resistance of 6 ohms and a current of 2 amperes?

• 12 volts
• 8 volts
• 4 volts
• 2 volts

7. If the current through a 40-ohm resistor is 1.5 amperes, what is the voltage across it?

• 60 volts
• 27 volts
• 40 volts
• 30 volts

8. What is the voltage across a resistor with a resistance of 9 ohms and a current of 0.2 amperes?

• 1.8 volts
• 4.5 volts
• 18 volts
• 0.18 volts

9. Calculate the voltage across a 15-ohm resistor with a current of 0.5 amperes.

• 7.5 volts
• 30 volts
• 15.5 volts
• 2.5 volts

10. What is the voltage across a 5-ohm resistor with a current of 3 amperes?

• 15 volts
• 8 volts
• 5 volts
• 20 volts