Question

When an electric lamp is connected to 12 V battery, it draws a current of 0.5 A. The power of the lamp is :

(a) 0.5 W

(b) 6 W

(c) 12 W

(d) 24 W

Answer 1

Given,

Voltage = 12 V

Current = 0.5 A

We know,

Power is given as the product of voltage and current

So,

P = V$\times$I

Putting all the values
P = 12 ​​​​​​​$\times$0.5 = 6 W

Hence the power of the lamp is 6 W.

Hence the correct option is (b)