figure-3.402 shows two lamps `L_(1) and L_(2)` in series and connected across `100 V` battery. Find the power consumed by each lamp.

Figure 7.44 shows three similar lamps L_(1) , L_(2), and L_(3) connectged across a power supply. If the lamp L_(3) fuses, how will the light emitted by L_(1) and L_(2) change?

Two bulbs which consume powers P_(1) " and P_(2) are connected in series. The power consumed by the combination is

Two identical electric lamps marked 500 W , 220 V are connected in series and then joined to a 110 V line. The power consumed by each lamp is

The voltage across a lamp is (6.0 +- 0.1) V and the current passing through it is (4.0 +- 0.2) ampare. Find the power consumed by the lamp.

(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.

The resistance of the filament of a lamp increases with the increase in temperature. A lamp rated 100 W and 220 V is connected across 220 V power supply. If the voltage drops by 10% , then the power of the lamp will be

When an electric lamp is connected to 12V battery, it draws a current of 0.5A. The power of the lamp is:

Two electric lamps of 40 watt each are connected in parallel. The power consumed by the combination will be

Assertion : Two identical bulbs when connected across a battery, produce a total power P. When they are connected across the same battery in series total power consumed will be (P)/(4) . Reason : In parallel, P=P_(1)+P_(2) and in series P=(P_(1)P_(2))/(P_(1)+P_(2))