An electric bulb rated as 200 W at 100 V is used in a circuit having 200 V supply. The resistance 'R' that must be put in series with the bulb so that the bulb delivers the same power is __________ `Omega`.

An electric bulb rated for 500W at 100V is used in circuit having 200V supply. Calculate the resistance R that must be put in seires with the bulb, so that the bulb delivers 500 W.

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.

(a) A 220V-100W bulb is connected to 110V source. Calculate the power consumed by the blub. (b) Calculate the following for a 100W - 200V bulb (i) Resistance of the filament of bulb (ii) Current through bulb when it is connected to 200V line (iii) Power consumed when bulb is connected to 100V line (c) An electric bulb rated 100W -200V is used in a circuit having 400V supply. what resistance R must be put in series with bulb so that bulb delivers 100W ? (d) Repeat the previous problem, if bulb delivers 25W . (e) Two bulbs, 50W-220V, 100W-200V are connected in series across a 220V supply. find the power consumed by each bulb.

An electric bulb with rating 200 W, 50V is connected to a source of 120 V. A resistance R is connected in series to the bulb, so that the bulb delivers 200W . Calculate the value of R.

An electric bulb is rated at 200 V, 100 W . What is its resistance ?

An electric bulb is rated at 220V, 100W. What is its resistance?

An electric bulb, marked 40 W and 200 V , is used in a circuit of supply voltage 100 V . Now its power is