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A 100 W bulb B(1) and two 60 W bulbs B(2...


A 100 W bulb `B_(1)` and two 60 W bulbs `B_(2)` and `B_(3)`, are connected to a 250V source, as shown in the figure now `W_(1),W_(2)` and `W_(3)` are the output powers of the bulbs `B_(1),B_(2)` and `B_(3)` respectively then

A

`W_(1) gt W_(2) = W_(3)`

B

`W_(1) gt W_(2) gt W_(3)`

C

`W_(1) lt W_(2) = W_(3)`

D

`W_(1) lt W_(2) lt W_(3)`

Text Solution

Verified by Experts

The correct Answer is:
d

Voltage across `B_(3)` is greatest, hence `B_(3)` will show maximum brightness. In series combination of bulbs the bulb of lesser wattage will glow more bright Hence `W_(2) gt W_(1)` so `W_(1) lt W_(2) lt W_(3)`
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