A rod of length 0.30 m and resistance 0.10 Ω can slide without friction on horizontal…
PHYSICS · Multi-part · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A rod of length 0.30 m and resistance 0.10 Ω can slide without friction on horizontal rails that are joined to a 0.40 Ω external resistor, forming a rectangular loop. The entire arrangement is in a uniform magnetic field of 0.80 T perpendicular to the plane of the loop. The rod is pulled to the right with a constant speed of 3.0 m s−1.
(a) Calculate the magnitude of the induced emf in the circuit.
(b) Determine the current in the circuit.