Question: In the circuit shown in Figure 4, a generator supplies a voltage of E(t) = 40 sin 60t volts, the inductance is H, the resistance

In the circuit shown in Figure 4, a generator supplies a voltage of E(t) = 40 sin 60t volts, the inductance is H, the resistance is 20Ω, and l(0) = 1 A. (a) Find l(t). (b) Find the current after 0.1 s. (c) Use a graphing device to draw the graph of the current function.

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