PHYSICS · Subjective · AP · Physics 2: Algebra-based · Electric Circuits · Electric Circuits
Problem
A 15\,V battery, a 4\,Ω resistor R1, and a junction that splits into two branches are connected in series with a switch. Branch A contains an 8\,Ω resistor R2. Branch B contains a 12\,Ω resistor R3 in series with an initially uncharged capacitor C. Immediately after the switch is closed the capacitor begins to charge.
Calculate the current through the 12\,Ω resistor (R3) (i) just after the switch is closed and (ii) after the circuit has reached steady state.