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Statement-1: Knowing that rating is done...

Statement-1: Knowing that rating is done at steady state of the filament, an electric bulb connected to a source having rated voltage consumes more than rated power just after it is switched on.
Statement-2: When filament is at room temperature its resistance is less than its resistance is less than its resistance when the bulb is fully illuminated

A

Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.

B

Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.

C

Statement-1 is true, statement-2 is false.

D

Statement -1 is false, statement -2 is true.

Text Solution

Verified by Experts

The correct Answer is:
A
Resistivity increases with rise in temperature
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