IS_Section Quiz_8.9_e

kW is a unit of power.

• True

• False

One watt is equal to 1000 kW.

• True

• False

Electrical energy can be measured by using a joulemeter.

• True

• False

Kilowatt-hour (kW h) is a unit of energy.

• True

• False

It is not possible for an electrical appliance to have an efficiency greater than 100%.

• True

• False

Kilowatt is a unit of energy.

• True

• False

One kilowatt is equal to 1000 joules per second.

• True

• False

One kilowatt-hour is the amount of electrical energy used by a 1 kW appliance in one hour.

• True

• False

One unit of electricity means 1 kJ of electrical energy used.

• True

• False

A filament bulb has a higher efficiency than an LED bulb.

• True

• False