45. To burn 60 watt, 30 volts at 90 volt supply Find the value of resistance connected in the series. (U.P.2014) Answer: 302

An electric bulb rated for 500 watt at 100 volt is connected to a 200 volt supply line . How much resistance has to be joined in seresies with the bulb so that , the bulb delivers 500 watt ?

An electric heater consumes 1 kilowatt power when connected across a 100 volt. D.C. supply. If this heater is to be used with 200V , 50Hz A.C. supply, the value of inductance to be connected in series with it is

A 25 watt, 220 volt bulb and a 100 watt, 220 volt bulb are connected in series across 440 volt line

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.

An electric bulb rated for 500 watt at 100 volt is used in a circuit having a 200 volt supply. The resistance R that must be put in series with the bulb, so that the bulb delivers 500 watt is ……….. Ohm.

A coil having resistance 15 and inductance 10 H is connected across a 90 Volt supply. Determine the value of current after 2sec . What is the energy stored in the magnetic field at that instant

A coil having resistance 15 and inductance 10 H is connected across a 90 Volt supply. Determine the value of current after 2sec . What is the energy stored in the magnetic field at that instant