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Homework Statement
Homework Equations
V = IR
I = V/R (1 - e^(-t / τ))
τ = L / R
The Attempt at a Solution
I'm so thrown off by these two problems. Every example I have done has nothing in parallel and it is simple, but my homework question involves having to do a much more difficult problem.
I've tried just plugging things in, but I cannot figure out which values of R go in.
If I(t) is the current in the inductor branch, then I think I(t) = I_max * (1 = e^(-t/τ))
From looking at t -> ∞, I calculated the total equivalent resistance as 25/3 ohms and got that the total current would be 4.2 Amperes, then the current going through the inductor branch is 1.2 Amperes (at infinity).
I tried 1.2 (1 - e^(-t / (τ) ))
and using τ = 4.2 / (25/3)
and I've tried using τ = 4.2 / 10
I tried setting up loop-rule equations for the outer loop and the lower half + a sum of currents equation, but I am fairly confident that doing this is not the best way to go about the problem. (and solving that is far beyond ap physics)
I understand equivalent resistance + equations for inductance + ohm's law, so no need to have to reexplain those things. (unless I did something wrong with them)