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60 W, 100 W and 1000 W bulbs are connected in parallel to the mains. The bulb that will be brightest is (all of them have same specified voltage)

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a
60W
b
100W
c
1000W
d
all are equally bright

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detailed solution

Correct option is C

For a parallel connection, power consumption is 

P= V2RP1R

For the given bulbs, R can be calculated by 

R = V2PratedR1Prated

Therefore, the 1000W bulb will be the brightest.

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