• question_answer A 25 watt, 220 volt bulb and a 100 watt, 220 volt bulb are connected in series across a 220 volt lines. Which electric bulb will glow more brightly                 [MP PET 1999; MP PMT 1999] A)            25 watt bulb                          B)            100 watt bulb C)            First 25 watt and then 100 watt D)            Both with same brightness

Correct Answer: A

Solution :

The resistance of 25 W bulb is greater than 100 W bulb. So for the same current, heat produced will be more in 25 W bulb. So it will glow more brightly.

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