question

(a) an ac circuit as shown in the figure has an inductor of inductance l and a resistor of resistance r connected in series. using the phasor diagram, explain why the voltage in the circuit will lead the current in phase.

(b) the potential difference across the resistor is 160 v and that across the inductor is 120 v. find the effective value of the applied voltage. if the effective current in the circuit be 1·0 a, calculate the total impedance of the circuit.

(c) what will be the potential difference in the circuit when direct current is passed through the circuit?

 

 

 

 

 

 

892