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Capacitance of Parallel Plate Capacitor

An electric l...

Question

An electric lamp is connected to $220 V, 50 H z$ 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 A $311 V$
As we konw,

$V_{0} = V_{r . m . s} \times \sqrt{2} = 220 \times \sqrt{2} = 311 V$

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