Question

If the magnetic field across a loop decreases to zero, what is the final magnetic flux through the loop?

Options

• \[\Phi_f=\Phi_i\]

• \[\Phi_f=BA\]

• \[\Phi_f=0\]

• \[\Phi_f=-\Phi_i\]

Answer 1

Magnetic flux depends on the magnetic field passing through the loop. When that field decreases to zero, the final flux is zero.