Question

which has grater resistance -1000watt electric heater or a 100 watt filament bulb both marked for 220 volt?​

Answer 1

Answer:

1000 watt

Explanation:

We have a formula $P = \frac{V^{2} }{R}$

On rearranging it, $R=\frac{V^{2} }{P}$

But, marked voltage is same for both i.e. 220 volt. Therefore, Resistance is inversely proportional to Rated Power.

So, electric heater with Rated power 100 watt will have greater resistance than 1000 watt.