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Q. When a material is inserted inside the inductor the current in the circuit increases, then the nature of the material is

Question

NTA AbhyasNTA Abhyas 2020Moving Charges and Magnetism

Solution:

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