Q. 53.9( 21 Votes )

In Exercises 3 and 4, what is the net power absorbed by each circuit over a complete cycle. Explain your answer.

Answer :

In inductive circuit

Root mean square value of current, I = 15.92 A


Root mean square value of voltage, V = 220 V


The net power absorbed by each circuit over a complete cycle is given by the solution:


Power = VI cosФ


Where Ф is the phase difference between the voltage and current


For a pure inductive circuit, the phase difference between voltage and current in 900.


Substituting the above values, we get


P = 0


In capacitor circuit


Root mean square value of current, I = 2.49 A


Root mean square value of voltage, V = 110 V


The net power absorbed by each circuit over a complete cycle is given by the solution:


Power = VI cos Ф


For a pure capacitor circuit, the phase difference between voltage and current in 900.


Substituting the above values, we get


P = 0


Zero power is absorbed by each circuit.


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