Question

1). Paheli does not have a night lamp in her room. She covered the bulb with a towel in the night to get dim light. Has she taken the right step? Give one reason to justify your answer.

2). The bulb in the circuit shown below does not glow. Can you identify the problem? How can that be

rectified?


3). Biraj made an electromagnet by winding 60 turns of wire over an iron screw. Piku also made an electromagnet

by winding 100 turns over a similar iron screw. Which electromagnet will attract more pins? Give reason.


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Answer 1

Answer:

no

Explanation:

Steps taken by Paheli are wrong as towel may get burned due to heat produced by the bulb and also glowing bulb unnecessarily will waste the energy.