LRC circuit q

please give me some hints on how to solve this q...

In a LRC circuit, R=20 Ohm , pot diff across cap = 100 V and irms=11 A. An AC source is connected(220V,50HZ) . Calculate pot diff across inductor.

2 Answers

106

Asish Mahapatra ·2009-09-09 01:23:51

is it LRC series or parallel?

If it is series,
Then Z = √R²+(X_L-X_C)² = V_rms/i_rms .. (i)

So, pd across cap = i.X_C .... (ii)

Solving (i) and (ii) ull get the values of C and L. So now u can calculate pd across inductor to be as below

pd across inductor = i.X_L

i=i_rms

it is series

100= 11 X xc
100/11= xc

from eqn 1 we get that xl=xc ,
so,
i X xl=100

but answer is given as 200

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