Kushagra has made the following arrangement for his school project, in which he has to light the bulb. The bulb will not glow if the ends A and B are connected with:

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Solution

If A and B are connected with a poor conductor of electricity, current would not flow through the circuit, and hence the bulb will not glow. Rubber, plastic etc. are the poor conductor of electricity. Therefore, ends A and B should not be connected with a plastic/rubber clip.

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Question 4

In the following arrangement shown in Fig., the bulb will not glow if the ends A and B are connected with

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