Three identical conducting circular loops are placed in uniform magnetic fields. Inside each loop there are two magnetic-field regions separated by a dashed diameter, as shown. The field magnitudes in the marked regions increase or decrease at the same rate. If Iₐ, Iᵦ and I꜀ are the induced-current magnitudes in loops A, B and C, choose the correct relation:

Question

G1 Physics · Accepted Answer

By Faraday’s law and symmetry, the induced-current magnitude in loop A equals that in loop C, and both are greater than the induced-current magnitude in loop B.