An AC source operating at 80 Hz with a maximum voltage of 215 V is connected in

Question

An AC source operating at 80 Hz with a maximum voltage of 215 V is connected in series with a resistor (R= 2.8 K ohms) and an inductor (L=3.6 H). (a) What is the maximum vale of the current in the circuit? (b) What are the maximum vales of the potential difference across the resistor and the inductor? (c) When the current is at a maximuj, what are the magnitudes of the potential differences across the resistor, the inductor, and the AC source? (d) When the current is zero, what are the magnitudes of the potential difference across the resistor, the inductor, and the AC source? Please use actual numbers in the formula.

Explanation / Answer

a.)Impedance of inductor=wL=1809.56 ohm

R=2800 ohm

So Z=3333.84 ohms

So Imax=215/3333.84=0.0645 A

b.)V across R=180.57 V

V across L=116.7 V

c.)V across R=180.57 V

V across L=116.7 V

V across AC source=297.27 V

d.)V across R=0 V

V across L=0 V

V across AC source= 0 V

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