Power and Energy Quiz

What is the unit of power?

• ohms

• watts

• volts

• joules

How do we measure the rate of energy transfer in an electrical circuit?

• P = V^2/R

• P = IR

• P = I^2R

• P = VI

If a device uses 50 watts of power and operates for 2 hours, how much energy does it use?

• 100 watt-hours

• 150 watt-hours

• 200 watt-hours

• 50 watt-hours

What is the formula to calculate power?

• Power = Force x Distance

• Power = Work / Time

• Power = Mass x Acceleration

• Power = Voltage x Current

What is the flow of electric charge called?

• electric current

• voltage flow

• charge movement

• electricity flow

What is the unit of electric current?

• C

• B

• D

• A

What is the measure of the force that drives the electric charge through a conductor?

• current

• resistance

• voltage

• velocity

What is the potential difference that causes the flow of current in a circuit called?

• power

• resistance

• current

• voltage

What is the unit of voltage?

• ohms

• volts

• meters

• watts

How do we measure the potential difference between two points in a circuit?

• Voltmeter

• Speedometer

• Barometer

• Thermometer