Home
Class 12
PHYSICS
A 200 W- 200 V lamp is connected to 250 ...

A 200 W- 200 V lamp is connected to 250 V mains.it power consuption is

A

300 W

B

312.5 W

C

292 W

D

250 W

Text Solution

Verified by Experts

The correct Answer is:
B

`P = V^(2)/R`
Promotional Banner

Similar Questions

Explore conceptually related problems

A 100 W, 200 V bulb is connected to a 160 V supply. The power consumption would be

A 100 W 200 V bulb is connected to a 160 V power supply. The power consumption would be

A lamp of 600W-240V is connected to 220 V mains. Its resistance is

A 200 W and 100 W bulbs, both meant for operation at 220 V, are connected in series to 220 V. The power consumption by the combination is

A 100W, 200V bulb is operated on a 110V line. The power consumed is

4 bulbs marked 40 W , 250 V are connected in series with 250 V mains. The total power is

Bulb B_1(100W - 250W) and bulb B_2(100W - 200V) are connected across 250V. What is potential drop across B_2 ?

(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.

A 50 W, 100V lamp is to be connected to an ac mains of 200V, 50 Hz. What capacitor is essential to be put in series with the lamp?