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Question

Find the impedance of the given circuit for (i) direct current, (ii) alternating current of frequency (104/π) kHz.
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Solution

Ans- (i)
Since in Direct Current capacitor does not allow current and act as open circuit, so its resistance is infinite.
Ans-(ii)
In AC, XC=1ωC=12πfC

=12π(104π)(20×106)

=2.5Ω
So, total resistance =20+2.5=22.5Ω

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