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Sinusoidal AC

An electric l...

Question

An electric lamp is connected to 220 V, 50 Hz supply. Then the peak value of voltage is

A

210 V

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B

211 V

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C

311 V

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D

320 V

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Solution

The correct option is D 320 V
$V_{0} = V_{r m s} \times \sqrt{2} = 220 \times \sqrt{2} = 310$

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