Question

A short solenoid of length
4 cm, radius 2.0 cm and number of turns 100 lying inside on
the axis of a long solenoid, 80 cm length and number of turns
1500. What is the flux through the long solenoid if a current
of 3.0 A flows through the short solenoid ? Also obtain the
mutual inductance of the two solenoids.​

Answer 1

Answer:

As M = μ0N1N2Al where, A = common cross - sectional area l = length of small coil N1 = No. of turns of small coil N1 = No. of turns of long coil M