Circuit electricity 1

Which component has this circuit symbol?

• cell

• battery

• resistor

• variable resistor

Which component has this circuit symbol?

• LED

• thermistor

• resistor

• diode

Which component has this circuit symbol?

• LED

• thermistor

• resistor

• variable resistor

What is the definition of 'electric current'?

• The flow of energy through a conductor.

• The rate of flow of energy through a conductor.

• The rate flow of charge through a conductor.

• The flow of voltage through a conductor.

Name the device used to measure electric current.

• barometer
• thermometer
• ammeter
• voltmeter

Name the device used to measure potential difference.

• barometer
• thermometer
• ammeter
• voltmeter

What equation links current, potential difference and resistance?

• I = P x R

• P = I x V

• V = I x R

• Q = I x t

What equation links current, potential difference and power?

• I = P x R

• P = I x V

• V = I x R

• Q = I x t

Name the unit of power.

• watt
• volt
• ampere
• ohm

Name the unit of resistance.

• watt
• volt
• ampere
• ohm