A circular wire loop of radius R lies in the xy-plane with centre O. A two-turn square loop of side a, with a≪R, is centred at z=√3R on the axis. Its plane makes 45° with the z-axis. If the mutual inductance is µ₀a²/(2^(p/2)R), find p.

Question

G1 Physics · Accepted Answer

Use εₗ=-L(dI/dt), U=½LI², and for mutual induction ε₂=-M(dI₁/dt). Applying the stated geometry/circuit condition gives 7.