Question

Which definition relates the flux through the inner coil to the current in the outer coil?

Options

• \[\Phi_1=L_2I_1\]

• \[\Phi_1=M_{12}I_2\]

• \[\Phi_1=\frac{M_{12}}{I_2}\]

• \[\Phi_1=M_{12}I_1\]

Answer 1

The current \[I_2\] in the outer coil produces the flux \[\Phi_1\] through the inner coil. Their relationship is \[\Phi_1=M_{12}I_2\] .