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# A Bulb is Rated as 250 V; 0.4 A. Find Its : (I) Power, and (Ii) Resistance. - CBSE Class 10 - Science

#### Question

A bulb is rated as 250 V; 0.4 A. Find its : (i) power, and (ii) resistance.

#### Solution

Given:
V = 250 V
I = 0.4 A

Power, P = VI
= 250 x 0.4
= 100 W

Resistance, R = R=P/(I2)

= 100/(0.4)^2
= 625 Ω

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Solution A Bulb is Rated as 250 V; 0.4 A. Find Its : (I) Power, and (Ii) Resistance. Concept: Electric Power.
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