Two resistance-less rails are connected by an inductor L. A rod of length ℓ and mass m receives impulse J to the right in uniform B. Select the correct statements.

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 A: Velocity of the conductor is half of the initial velocity after a B 2 3J L displacement of the conductor d = J 4 B 2 2m; B: Current flowing through the inductor at the instant when velocity of 3J2 the conductor is half of the initial velocity is i = 4Lm.