P.No.15.8:- A solenoid of length 8.0cm and cross section area 0.5 cm square has 520 turns. Find the self inductance of the solenoid when the core is air. If the current in the solenoid increases through 1.5A in 0.2s, find the magnitude of induced emf in it.

P.No.15.8:- A solenoid of length 8.0cm and cross section area 0.5  cm square has 520 turns. Find the self inductance of the solenoid when the core is air. If the current in the solenoid increases through 1.5A in 0.2s, find the magnitude of induced emf in it.

Solution:-