The current in the circuit is given by:
i(t) = i0e(-R/L)t
An RL circuit is shown on the right. L = 2.2 J, R = 258 Ω, ε = 4.5 V
Switch A is closed at t = 0.
Part (a) After a long time, when the current reaches its steady value, open switch A and close switch B at the same time. Count this moment as t = 0. Express the current in the circuit, I, as a function of time in terms of L, R and e.
Part (b) Now what is the direction of the current I, counterclockwise or clockwise?
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