#### Two coaxial solenoids are made by winding thin insulated wire over a pipe of cross­sectional area A = 10 cm2 and length = 20 cm. If one of the solenoids has 300 turns and the other 400 turns, their mutual inductance is Option 1) Option 2) Option 3) Option 4)

As we learnt in

Mutual Induction -

Whenever the current passing throug the coil or circuit changes, the magnetic flux linked with neighbouring coil or circuit will also change.

- wherein

Option 1)

This option is correct

Option 2)

This option is incorrect

Option 3)

This option is incorrect

Option 4)

This option is incorrect