Materials and Components - Engineering

Q1:

The core of a coil has a length of 10 cm. The self inductance is 8 mH. If the core length is doubled, all other quantities remaining the same, the self inductance will be

A 32 mH

B 16 mH

C 8 mH

D 4 mH

ANS:D - 4 mH

Inductance is inversely proportional to the core length.