A pure capacitor is connected to a (rms), AC mains supply

PHYSICS · Subjective · CBSE · Physics · Alternating Current · Alternating Current

Problem

A pure capacitor is connected to a

230\,\text V

(rms),

50\,\text{Hz}

AC mains supply. (a) The capacitance is

8.0\,\mu\text F

. Calculate the capacitive reactance of the circuit. (b) Determine the rms current drawn from the supply. (c) What value of capacitance should be connected instead of the given capacitor so that the rms current is limited to

0.25\,\text A

under the same supply conditions?

Related theory

AC Circuit Elements
AC circuits with R, L, C
AC applied to a capacitor
Alternating Current

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