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The instantaneous current in a circuit is given by I = 10 x sin ( 120n t) amps If time (t) is is measured in

The instantaneous current in a circuit is given by I = 10 x sin ( 120n t) amps If time (t) is is measured in seconds, what is the frequency of the current in hertz? A 120 It B 120 C 60 D 38.2

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