An electromagnet that is modeled as a resistor R=20 ohms and L=0.3 henrys in series, is connected to a sinusoidal voltage of 120V (rms) and 60Hz at t=0 when the phase angle happens to be 10°, i.e. v(t) = 120√/2cos(120πt +10°). The current immediately after switching is (give the exact value)

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Single Phase AC Circuit

Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.