Two bulbs rated 25  W −220V and 100  W −220V are connected in series to a 440 V line. which one is likely to fuse?

Two bulbs rated 25  W220V and 100  W220V are connected in series to a 440 V line. which one is likely to fuse?

  1. A

    25 W bulb

  2. B

    100 W bulb

  3. C

    Both bulbs

  4. D

    None

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    Solution:

    The resistance of 25 W bulb will be higher than 100 W bulb. So when connected in series across 440 V, potential difference across 25 W bulb will be more than 220 V. Hence, this bulb is likely to fuse.

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