Ohm's Law Quiz: Calculating Current

1. What is the formula to calculate current in a circuit?

• I = VR

• I = R/V

• I = V/R

• I = V + R

2. If the voltage in a circuit is 12 volts and the resistance is 4 ohms, what is the current flowing through the circuit?

• 6 amperes

• 2 amperes

• 10 amperes

• 3 amperes

3. A circuit has a resistance of 8 ohms and a current of 2 amperes. What is the voltage across the circuit?

• 16 volts

• 10 volts

• 4 volts

• 20 volts

4. If the current in a circuit is 3 amperes and the resistance is 6 ohms, what is the voltage in the circuit?

• 18 volts

• 9 volts

• 24 volts

• 12 volts

5. Calculate the current in a circuit with a voltage of 24 volts and a resistance of 12 ohms.

• 6 amperes

• 0.5 amperes

• 2 amperes

• 10 amperes

6. A circuit has a voltage of 9 volts and a resistance of 3 ohms. What is the current flowing through the circuit?

• 3 amperes

• 9 amperes

• 12 amperes

• 6 amperes

7. If the resistance in a circuit is 5 ohms and the current is 4 amperes, what is the voltage across the circuit?

• 10 volts

• 15 volts

• 25 volts

• 20 volts

8. Calculate the current in a circuit with a voltage of 18 volts and a resistance of 9 ohms.

• 5 amps

• 10 amps

• 3 amps

• 2 amps

9. A circuit has a voltage of 15 volts and a current of 3 amperes. What is the resistance in the circuit?

• 10 ohms

• 7 ohms

• 2 ohms

• 5 ohms

10. If the voltage in a circuit is 20 volts and the current is 5 amperes, what is the resistance in the circuit?

• 15 ohms

• 4 ohms

• 2 ohms

• 10 ohms