31. Alternating Current
Alternating Voltages and Currents
Multiple Choice
Multiple ChoiceAn AC source produces an alternating current in a circuit with the function i(t)=(1.5A)cos[(250s−1)t]. What is the frequency of the source? What is the maximum current in the circuit?
A
f=39.3 Hz
B
f=250 Hz
C
f=393 Hz
D
f=1570 Hz
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