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An alternating source of 220V, 50 Hz is connected to an electric lamp. The peak voltage of source is :

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An alternating source of 220V, 50 Hz is connected to an electric lamp. The peak voltage of source is : 

(a) 211 V 

(b) 210 V 

(c) 320 V 

(d) 311 V

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1 Answer

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Best answer

Correct option  (d) 311 V

Explanation:

From the formula

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