Question

The current I in an electrical circuit is given by L di/dt+iR=0 where R and L are constants. Determine the solution to the equation when I = 4A, t = 0.8ms, R = 4kΩ and L = 2H.

Answer 1

Solve this ODE using separation of variables.
So you can write di/i = -(R/L) dt
Now integrate both sides.
What will you get ?

Answer 2

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