Physics - Magnetism Question with Solution | TestHub

When a diamagnetic material is inserted into a coil, the value of permeability decreases, hence$\mathrm{L}$decreases. Therefore$\mathrm{Z}=\sqrt{{\mathrm{X}}_{\mathrm{L}}^2+{\mathrm{R}}^2}$decreases and as a result the current increases.