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A current I=1.54cos377t (I in amps, t in seconds, and the "angle" is in radians) flows...

A current I=1.54cos377t (I in amps, t in seconds, and the "angle" is in radians) flows in a series LR circuit in which L = 3.85 mH and R = 1.15 k? .

What is the average power dissipation?

Pavg = ?

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Answer #1

Average power dissipation can be given as

The energy gets dissipated due to resistor only hence instead of total impedance, the only resistor is used.

Then power loss will be

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