How does the mutual inductance of a pair of coils change when: Number of turns in the coils is increased?

How the self-inductance of a coil depends on number of turns in the coil ?

Define mutual inductance between a pair of coil. On what factors does it depend ?

The mutual inductance between two coils depends upon

Find the magnitude of magnetic induction at a point 0.06m from the centre and along the axis of a circular coil carrying a current of 2 A. Also calculate the magnitude of magnetic induction at the centre of the coil. Given: Number of turns in the coil = 20 Mean radius of the coil = 0.05 m.

Give scientific reason : "The magnetic field produced by a current carrying conductor increases as the number of turns in the coil increases”.