The resistance of a telegraph line is R = 10 , and the solenoid inductance is L

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The resistance of a telegraph line is R = 10 Ω, 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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System Dynamics

ISBN: 978-0073398068

3rd edition

Authors: William Palm III

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