Ans. ELECTRIC POWER
The amount of energy supplied by current in unit time is Known as .electric power.
Electric power can be determined by the formula:
Electrical Energy Electric power = — T|me——
Or p where W is the electrical energy given by
W » QV.Therefore, power P can be written as
Appliance
Power (watts)
Electric stove
5,000
Electric heater
1,500
Hair dryer
1,000
Iron
800
Washing machine
750
light
100
Small fan
50
Clock radio
10
Unit: The SI unit of power is watt (W).
Watt
If- one joule of energy is supplied for one second, then electric power will be one watt.
i.e. 1W = 1 Js~1