How much energy does a 13w light bulb used?

Question

How much energy does a 13w light bulb used?

Answer 1

13 joules every second when lighted, zero otherwise.

Answer 2

1 watt= 1 joule of energy dissipated per second or in other words it is the rate of dissipation of energy.

Therefore a 13W bulb when lighted emits or radiates out 13 joules of energy per second and when it is put-off it becomes 0.

Answer 3

13W

Answer 4

It uses the effect 13w every second.

During one sec: 13w x 1s= 13 Joule= 13Nm

Usually you count electrical energy in kilowatt hours KWh(1000wh)

Energy given in one hour with 1 kw effect.

Remember Effect= Energy/ time

Answer 5

if you keep it ON for 't' hours,

then,

Energy = (13 * t) Joules.