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NEET 2021 · Pure R, L and C Circuits

Pure R, L and C Circuits question from NEET 2021

Q56NEET 2021Easy

Pure R, L and C Circuits

A capacitor of capacitance 'C', is connected across an ac source of voltage V, given by V = V0sin $\omega$ t

The displacement current between the plates of the capacitor, would then be given by:

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Answer: (b)

Displacement current equals conduction current: $I_d = \frac{dq}{dt} = C\frac{dV}{dt}$ .
$I_d = C \frac{d}{dt}(V_0 \sin \omega t) = V_0 \omega C \cos \omega t$
So the answer is (b) $I_d = V_0 \omega C \cos \omega t$ .

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