An air cored solenoid having a length of 30 cm whose area is

Last updated: 6/25/2023

An air cored solenoid having a length of 30 cm whose area is 25 cm and the number of turns is 500 And the solenoid has carried a current of 2 5 A Suddenly the current is turned off and the time is taken for it is 10 3 8 What would be the average value of the induced back emf by the ends of the open switch in the circuit Neglect the variation in the magnetic fields near the ends of the solenoid 1 5 5 V 2 4 5 V 3 6 5 V