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Assertion : The electric bulbs glows imm...

Assertion : The electric bulbs glows immediately when switch is on.
Reason : The drift velocity of electrons in a metallic wire is vary high.

A

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

B

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

C

If assertion is true but reason is false

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
C
Because `I = "ne"Av_(d)`
n = number of electrop per unit volume is very large.
`therefore v_(d)` is low.
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