Question

calculate the resistance of the bulb rated at 100 watt, 220 volt potential. what is the current flowing in the bulb when connected across a potential difference of 220 volt.​

Answer 1

Answer:

Given,

Power (P) = 100 W

Potential Difference (V) = 220 V

P = VI

... where I is the amount of Current,

100 = 220I

0.45 A = I

V = IR

.... where R is the Resistance,

220 = 0.45R

488.8 Ohm = R

The Current flowing is 0.45 A and Resistance is 488.8 ohm.

I hope this helps.