A 30V, 40 w lamp is to be operated on a 120 V DC lines. For proper glows, how much resistance in `Omega` should be connected in series with the lamp?

A 30 V . 90 W lamp is to be operated on a 120 V d.e. line for proper glow, a resistor of .. Omega should be connected in series with the lamp

A 30 V, 90 W lamp is to be perated on a 120 V D.C. line. For proper glow, a resistor of ………….. ohm should be connected in series with the lamp.

If a 30 V, 90 W bulb is to be worked on a 120 V line, resistance of how many ohms should be connected in series with the bulb

If a 30 V, 90 W bulb is to be worked on a 120 V line, resistance of how many ohms should be connected in series with the bulb

If a 30 V, 90 W bulb is to be worked in 120 V line, the resistance to be connected in series with the bulb is

If a 30 V, 90 W bulb is to be worked in 120 V line, the resistance to be counnected in series with the bulb is

A 120 V, 60 W lamp is to be operated on 220 V, 50 Hz supply mains. Calculate what value of pure inductance which would be required so that the lamp runs on correct value of power.

Two lamps need 50V and 2.0amp each in order to operate at a designed brilliancy. They are to be connected in series across a 120 volt line. What is the resistance of the rheostat which must be placed in series with the lamp?

The resistance of an electrical appliance is 200 Omega and it can withstand a maximum current of 1A. To operate the appliance on a dc source of 220 V what minimum resistance should be connected in series with it?