PHYSICS · Multi-part · AP · Physics 2: Algebra-based · Electric Circuits · Electric Circuits
Problem
Three resistors R1, R2, and R3 form an equilateral triangle with vertices A, B, and C. A battery is connected across side AB, and a wire connects vertex C to the midpoint M of side AB.
(1) Determine the number of independent closed loops in the circuit as described.
(2) Determine the number of independent closed loops that remain if the wire CM is removed.