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In a series LCR circuit L=2H, R=10Omega,...

In a series LCR circuit `L=2H`, `R=10Omega`,& `C=32 mu F`.If the voltage of ac source in given by `V=300sin(100 pi t)`, then at `t=(1)/(600)` second,when instantaneous charge (q) on capacitor and current (i) are `640 mu C` and `2A` respectively, the rate of change of current across inductor is,

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