An A.C source is rated at 220 V, 50 Hz. The time taken for voltage to change

An A.C source is rated at 220 V, 50 Hz. The time taken for voltage to change from its peak value to zero is

(a) 50 sec
(b) 0.02 sec
(c) 5 sec
(d) 5 x 10⁻³ sec

5 x 10⁻³ sec

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