Question

it is marked as 100 w ,220b in an electric appliance what will be it's pwer if the applied voltage is 110v​

Answer 1

Answer:

The power of appliance is 25 W if applied voltage is 110 V.

Explanation:

Marked power = 100 W

Marked voltage = 220V

We know

Power P = V² / R

( R = resistance of appliance )

100 = ( 220 )²/ R

R = 48400/ 100 ohm

R = 484 ohm

Now,

Applied voltage = 110 V

So

✅Power P = V² / R

✅P = ( 110 )² / 484 watt

✅P = 25 watt