Moving Charges And Magnetism

The magnetic flux near the axis and inside the air core solenoid of length \(60 \mathrm{~cm}\) carrying current '\(\mathrm{I}\)' is \(1.57 \times 10^{-6} \mathrm{~Wb}\). Its magnetic moment will be \(\left[\mu_0=4 \pi \times 10^{-7}\right.\), SI unit and crosssectional area is very small as compared to length of solenoid.]