Solved: The resistance of a telegraph line is R = 10 , and
Chapter , Problem 8.16(choose chapter or problem)
The resistance of a telegraph line is \(R=10 \ \Omega\), and the solenoid inductance is L = 5 H. Assume that when sending a “dash,” a voltage of 12 V is applied while the key is closed for 0.3 s. Obtain the expression for the current i(t) passing through the solenoid.
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