Help with electric circuit problems

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bartini
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  • Handwritten problem statement and circuit schematic: a 50 V source with a 4 Ω resistor, a switch at t=0, a 14 Ω resistor, a 20 V source, a 6 Ω resistor and an inductor L carrying current i(t).
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  • Handwritten homework problem 3: determine the equation for current i in the circuit, with a hint to find initial conditions for the capacitor and inductor, then solve for i. Circuit schematic shows a 3A current source, 4Ω resistor, switch at t=0, inductor L (4H), resistor R2 (2Ω), capacitor C (0.05F), and resistor R (6Ω).
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  • Handwritten homework problem 4 asking for source current i_s(t) in the form A cos(wt + theta), with R = 1 ohm, L = 1 H, C = 1 F, Vs = 2 cos wt, and w = 1 rad/sec, plus a circuit schematic of a source feeding a parallel RLC network with a resistor in series with the branch containing L and R, and a series R and C branch.
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