If current in electric bulb drops bu 1% the power decreases by?
Correct answer: B. 2%
- A. 1%
- B. 2%
- C. 4%
- D. 0.5%
Explanation
Here is the explanation of the correct option = I2 RIf the current changes by 1% then new current will be:I/ = I x (1 - 1/100)=I x 0.99P/ = (I/)2 R=(0.99 . I)2 R=0.9801 I . R2P% = x 100%= x 100%= 1.99 %
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About Steady Current
Steady current is the continuous flow of charge at a constant rate through a conductor. The topic covers current, charge, potential difference, resistance, Ohm's law, resistivity and electrical power, along with series and parallel circuits, while distinguishing conventional current direction from electron motion.
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