An electric bulb rated for 500 watts at 100 volts is used in a circuit having a 200…
PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity
Problem
An electric bulb rated for 500 watts at 100 volts is used in a circuit having a 200 volts supply. The resistance R that must be put in series with the bulb, so that the bulb delivers 500 watt is .....ohm.