A capacitor is required to be connected across a (rms), AC source so that the rms…

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

Problem

A capacitor is required to be connected across a

200\,\text V

(rms),

60\,\text{Hz}

AC source so that the rms current does not exceed

1.0\,\text A

. (a) Calculate the capacitive reactance that will satisfy this condition. (b) Determine the capacitance needed. (c) If the frequency of the source is changed to

100\,\text{Hz}

while the same capacitor remains connected, find the new rms current in the circuit.

Related theory

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

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