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Assertion:  An electrical bulb starts glowing instantly as it is switched on. 

Reason:  Drift speed of electrons in a metallic wire is very large.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false

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