Question
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
Solution
C.
If assertion is true but reason is false.
As the conductor is full of electrons, with slight drift anywhere the queue starts moving. As a result, bulb starts glowing instantly. The drift velocity of electrons in a good conductor is very low.
