Question: In Exercises use the differential equation for electric circuits given by In this equation, I is the current, R is the resistance, L is the

In Exercises use the differential equation for electric circuits given by

dl L + RI = E. dt

In this equation, I is the current, R is the resistance, L is the inductance, and E is the electromotive force (voltage).

Use the result of Exercise 33 to find the equation for the current when I(0) = 0, E₀ = 120 volts, R = 600 ohms, and L = 4 henrys. When does the current reach 90% of its limiting value?

Data from in Exercise 33

Solve the differential equation for the current given a constant voltage E₀.

dl L + RI = E. dt

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