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  • The figure shows the graphical variation of the reactance of a capacitor with frequency of ac source. (a) Find the cap

The figure shows the graphical variation of the reactance of a capacitor with frequency of ac source.

(a) Find the capacitance of the capacitor.
(b) An ideal inductor has the same reactance at 100\; Hz frequency as the capacitor has at the same frequency. Find the value of
inductance of the inductor.
(c) Draw the graph showing the variation of the reactance of this inductor with frequency.

 

 
 
 
 
 

Answers (1)

a)

C=\frac{1}{2\pi fX_c}

From graph when f=100Hz, Xc=6

C=\frac{1}{2\pi \times100\times6}=0.265\times10^{-3}F

b)

\\X_c=X_L=wL=6\ at \ 100Hz\\2\pi \nu L=6\\L=\frac{6}{2\pi\times100}=0.955\times10^{-2}H

c)

Posted by

Safeer PP

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