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a) Derive the expression for the current...

a) Derive the expression for the current flowing in an ideal capacitor and its reactance when connected to an ac source of voltage `V=V_0sin omegat`
b) Draw its phasor diagram.
c) If resistance is added in series to capacitor what changes will occur in the current flowing in the circuit and phase angle between voltage and current.

Text Solution

Verified by Experts

(a) Derivation of instantaneous current `i= i_0 sin (omega t + prod//2)`
Reactance `X_c = 1//omegaC`
Phasor diagram showing v and i relation in pure C
(b) Explanation that adding R it will behave RC series ac circuit Calcuation of current and phase angie
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