Under certain conditions, the electric current i (in A) in the circuit shown in Fig. 20.33 is given below. For what value of t (in s) is the current first equal to zero?
i = −e^−100t (32.0sin624.5t + 0.200 cos624.5t)

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- 20 Ω elle 0.10 Η Η 25 μF 3 Fig. 20.33