a rc series circuit of r=10ohm and c=10 microfarad is connected to 20 volt DC supply for very long time. Then capacitor is disconnected from circuit and connected to inductor of 10 Milli henry. Find amplitude of current?

Answers (1)

  C=10μF     Vo?=20 volts     L=10mH 

\begin{aligned} &\text { Amplitude of the current } \mathrm{I}_{0}=\mathrm{Q}_{0} \mathrm{w}=\left(\mathrm{CV}_{0}\right) \frac{1}{\sqrt{\mathrm{LC}}}=\sqrt{\frac{\mathrm{C}}{\mathrm{L}}} \mathrm{V}_{\mathrm{o}}\\ &\Longrightarrow \mathrm{I}_{0}=\sqrt{\frac{10 \times 10^{-60}}{10 \times 10^{-3}}} \times 20=0.2 \sqrt{10} \mathrm{A} \end{aligned}

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