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  4. A hot wire ammeter reads 10 A in an ac circuit. The peak value of current is

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Q. A hot wire ammeter reads 10 A in an ac circuit. The peak value of current is

KCETKCET 2000Electromagnetic Induction

Solution:

$I_{rms} = \frac{1}{\sqrt{2}} \, i.e. \, I_0 = \sqrt{2} \, I_{rms} = \sqrt{2} \times 10$