A choke coil of inductance and resistance is connected to a (rms)

PHYSICS · Multi-part · CBSE · Physics · Alternating Current · Alternating Current

Problem

A choke coil of inductance

0.10\,\text{H}

and resistance

5\,\Omega

is connected to a

220\,\text{V}

(rms),

50\,\text{Hz}

mains supply. (i) Calculate the inductive reactance of the coil at the supply frequency. (ii) Determine the rms current drawn from the source. (iii) Compute the average power consumed by the coil. (iv) Calculate the ratio of the average power to the apparent power

VI

and comment on whether the current in this practical choke can still be regarded as nearly wattless.

Related theory

Power in AC Circuits
AC Circuit Analysis
AC Circuit Elements
Alternating current
AC circuits with R, L, C
AC applied to an inductor

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