Question

a light bulb has a resistance of 240 ohm when operating at 12 v battery the power consumption is​

Answer 1

Answer: 20

Explanation:

Answer 2

The power consumption is​ 0.6 W.

Explanation:

Given,

The resistance of the bulb, R = 240 Ω and

The voltage produced by battery, V = 12 V.

It is given that , voltage is applied across the bulb .

∴ Current through the bulb,$I=\dfrac{V}{R}$

= $\dfrac{12}{240}$

= 0.05 A

We know that,

Power consumed , P = VI

Put V = 12 V, I = 0.05 A, we get

∴ P = $12\times 0.05$

= 0.6 W

Thus, the power consumption is​ 0.6 W.