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

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Solution

Analyzing the situation
No, Paheli's behaviour was inexcusable.
As we have seen that the heating effect of electric current is the reason for the lighting of the bulb. Therefore, towel when wrapped over the bulb may be burned by the heat created by the bulb
She wasted a lot of energy by dimming the light in her room by covering it with a towel at night.
Hence, the step taken by Paheli was incorrect.

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