GCSE Electrical Power Quiz

What is the formula for calculating power?

• Power = Mass x Acceleration

• Power = Force x Distance

• Power = Work / Time

• Power = Voltage / Current

If a circuit has a resistance of 10 ohms and a current of 2A, what is the power dissipated in the circuit?

• The power dissipated in the circuit is 20 watts.

• The power dissipated in the circuit is 5 watts.

• The power dissipated in the circuit is 15 watts.

• The power dissipated in the circuit is 40 watts.

What is the unit of power?

• Watt

• Ohm

• Ampere

• Volt

A motor has a power output of 500W and operates at a voltage of 240V. What is the current drawn by the motor?

• 10A

• 0.5A

• 5.12A

• 2.08A

What is the power consumption of a device with a resistance of 50 ohms and a current of 4A?

• The power consumption of the device is 200 watts.

• The power consumption of the device is 400 watts.

• The power consumption of the device is 1000 watts.

• The power consumption of the device is 800 watts.

What is the relationship between power, voltage, and current in an electrical circuit?

• P = V * I

• P = V - I

• P = V / I

• P = V + I

If a circuit has a power of 400W and a current of 10A, what is the voltage across the circuit?

• 5V

• 20V

• 100V

• 40V

If a circuit has a resistance of 20 ohms and a current of 5A, what is the power dissipated in the circuit?

• The power dissipated in the circuit is 100 watts.

• The power dissipated in the circuit is 50 watts.

• The power dissipated in the circuit is 200 watts.

• The power dissipated in the circuit is 150 watts.

What is the formula for calculating electrical power in a circuit?

• Power = Voltage x Current

• Power = Resistance x Current^2

• Power = Voltage^2 / Resistance

• Power = Current / Resistance

What is the power consumption of a device with a resistance of 25 ohms and a current of 3A?

• The power consumption of the device is 75 watts.

• The power consumption of the device is 100 watts.

• The power consumption of the device is 125 watts.

• The power consumption of the device is 150 watts.