An electric bulb is designed to operate with a power of 500

Last updated: 6/14/2023

An electric bulb is designed to operate with a power of 500 W at 100 V line It is connected in series with a resistor of resistance R This combination is connected to 200 V supply as shown The value of R so that the bulb delivers 500 W is 12 6 20 20 R R www 200V p y 2 Ran 40 500 20012 20 R