Two bulbs X and Y having same voltage rating and of power 40 watt and 60 watt, respectively, are connected in series across a potential difference of 300 volt, then
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a
X will glow brighter
b
resistance of Y is greater than X
c
heat produced in Y will be greater than X
d
voltage drop across X will be smaller than Y
answer is A.
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Detailed Solution
Resistance ∝ 1Power. Thus, 40 W bulb has a high resistance, because of which there will be more potential drop across 40 W bulb. Thus 40 W bulb will glow brighter.