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

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

Options

(a) 210 V
(b) 211 V
(c) 311 V
(d) 320 V

Correct Answer:

311 V

Explanation:

Measurement of A.C voltage gives the rms values.
V(rms) = 220 V
Peak value Vm = V(rms) √2 = √2 (220 V) = 311 V.

AFMC2007
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