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A DC voltage source of 10 V is applied to a series RL circuit with R = 5 ohms and L = 2 H at t = 0. What is the expression for the current i(t) for t >= 0?

i(t) = 2(1 - e^(-2.5t)) A i(t) = 2(1 - e^(-0.4t)) A i(t) = 2 * e^(-2.5t) A i(t) = 10(1 - e^(-0.4t)) A

Correct Answer:

i(t) = 2(1 - e^(-2.5t)) A

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