Energy consumed by the lamp = 1000 J
Time = 10 s
We need to find the power of the lamp.
What is power?
Power can be defined as the rate of doing work; it is the work done in unit time. The SI unit of power is Watt (W) which is joules per second (J/s).
Power = Work/Time
P = W/t
Work done is the same as the energy consumed by the lamp.
Put the above values in the power formula; we get the power of the lamp.
P =100 W
∴ The power of the lamp is 100 W