Question

An electric bulb is rated '200 V ,100 W'.How much current will the bulb draw if connected to a 250 V supply?​

Answer 1

Explanation:

The relation between Power and the voltage is given by the formula,

P= VI

Here , P= 100W. V=250V

I = P/V

I = 100W/ 250 V

:- I = 0.4 Amperes.

Hope this helps you a little!!!!