In a closed circuit, the electric bulb is not glowing. This is because, .

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Solution

If an electric bulb does not glow even when it is connected to the cell, it could be due to one of the following reasons:

1. The bulb is fused. A bulb that has a broken filament is termed as a 'fused bulb'.
2. Circuit may be broken.
3. Connecting wires are made of an insulator. Usually copper, being a good conductor, is used to make connecting wires.

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