(a) Define the SI unit of self-inductance.
(b) The self-inductance of a solenoid is L. If the number of turns per unit length in it is doubled and the area of cross-section is halved, find the new inductance of the solenoid.
a) The self-inductance of a coil is said to be one henry if the magnetic flux of one weber is produced when a current of one ampere flows through it.
b)