During charging a capacitor variation of potential $V$ of the capacitor with time $t$ is shown as
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(a) For charging of capacitor $q = {q_0}\left( {1 - {e^{ - \,\frac{t}{{CR}}}}} \right)$ and potential difference $V = {V_0}\left( {1 - {e^{ - \,\frac{t}{{CR}}}}} \right)$
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