AQA GCSE Physics Quiz: Electrical Circuits

What is the unit of current?

• B

• C

• D

• A

What is the potential difference in a circuit with a resistance of 4 ohms and a current of 2 amperes?

• 8 volts

• 10 volts

• 6 volts

• 3 volts

What is the resistance of a component if a potential difference of 12 volts produces a current of 3 amperes?

• 4 ohms

• 2 ohms

• 10 ohms

• 6 ohms

What is the equation for calculating the potential difference in a circuit?

• V = I * R

• V = I + R

• V = R / I

• V = I / R

What is the equation for calculating the resistance in a circuit?

• R = V + I

• R = V/I

• R = V - I

• R = V x I

What is the total resistance in a series circuit with resistors of 3 ohms, 5 ohms, and 2 ohms?

• 8 ohms

• 15 ohms

• 1 ohm

• 10 ohms

What is the current in a circuit with a potential difference of 24 volts and a resistance of 6 ohms?

• 2 amperes

• 12 amperes

• 8 amperes

• 4 amperes

What is the potential difference in a circuit with a current of 0.5 amperes and a resistance of 10 ohms?

• 5 volts

• 15 volts

• 2 volts

• 0.05 volts

What is the power of a circuit with a current of 3 amperes and a potential difference of 12 volts?

• 24 watts

• 15 watts

• 9 watts

• 36 watts

What is the unit of resistance?

• Ohm

• Ampere

• Volt

• Watt