If the current in an electric bulb increases by 1 %, what will be the change in the power of a bulb ?[Assume that the resistance of the filament of a bulb remains constant.](A) increases by 1 % (B) decreases by 1 %(C) increases by 2 % (D) decreases by 2 %

If the current in an electric bulb increases by 1 %, what will be the

1.	If the current in an electric bulb increases by 1 %, what will be the change in the power of a bulb ?[Assume that the resistance of the filament of a bulb remains constant.](A) increases by 1 % (B) decreases by 1 %(C) increases by 2 % (D) decreases by 2 %
Answer» Option (C): The power will increase by 2%.Explanation:Assumptions:I = Current through the bulb.V = POTENTIAL difference across the bulb.R = resistance of the bulb.We know,Power of bulb is given by.Using OHM's law,.Therefore, .Now, the current is increased by 1%.LET the new current by , such that,.And the resistance is same.Therefore, the new power will BETHE % change in power is given by Since, , therefore the power has increased.Thus, the correct option is (C).

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If the current in an electric bulb increases by 1 %, what will be the change in the power of a bulb ?[Assume that the resistance of the filament of a bulb remains constant.](A) increases by 1 % (B) decreases by 1 %(C) increases by 2 % (D) decreases by 2 %

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