The e.m.f. is induced in a circuit if it links with the changing flux produced by the other neighbouring coil. This e.m.f. is known as mutually induced e.m.f. and the phenomenon is known as mutual induction.
Inductance in Parallel – Derivation & Formula
When the coils are so connected as to have a common voltage i.e. their startings are connected at one end and their ends are connected at another end across a voltage, these are said to be connected in parallel (Fig. 1).
Inductance in Series – Derivation & Formula
When the coils are so connected that the end of coil one is connected to the starting of second coil and so on as to form a shape of a chain, these are connected in series. In this case the flux of first coil does not effect the second coil at all.
