Q. 65.0( 1 Vote )

An inductor of re A. 8 W.

B. 12 W.

C. 14.4 W.

D. 18 W.

Answer :

Given,
Inductive reactance,

Capacitive reactance,

Resistance,

Rms voltage,


The average power dissipated by resistor (power is NEVER dissipated by inductor or capacitor) of resistance R in any ac circuit with rms current Irms is given by:



Now,



where Vrms is the rms voltage and Z is impedance given by:


Reactance,


Now,



We can now calculate the power dissipated:





Hence, the correct answer is (c). No other option matches the calculated value.

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