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

Define bond energy. On what factors does it depend?

The mutual inductance between two coils depends on

The mutual inductance between two coils depends upon

Define the term 'mutual inductance' between the two coils.

Define mutual inductance between a pair of coils. Derive expression for the mutual inductance of two long coaxial solenoids of same length wound one over the other.