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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 illuminatedA. 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. |
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Answer» Correct Answer - A Resistivity increases with rise in temperature |
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