Question

State and define the SI unit of mutual inductance.

Answer 1

1. Henry (H) is the unit of mutual inductance.
2. Henry = `"volt"/(A s)` = ohm.s
   1 henry= 1 ohm· s
3. If the current change rate in the primary circuit is 1 A/s and the induced emf in the secondary circuit is 1 volt, the mutual inductance (M) of the two circuits is 1 H.