The magnetic field is B⃗=B₀(1+x/a)k̂. A square loop of side d is moved with constant velocity V⃗=V0î. The induced emf is:
Options

Question

The magnetic field is B⃗=B₀(1+x/a)k̂. A square loop of side d is moved with constant velocity V⃗=V0î. The induced emf is:

G1 Physics · Accepted Answer

The field varies with x, so dΦ/dx=(B₀/a)d². Therefore |ε|=V₀(dΦ/dx)=V₀B₀d²/a. Hence option A.