An air cored solenoid with length 20 cm area of cross secrtion 2 A. The currnet is suddenly switched off within `10^(-3)` s. The average back emf induced acrsss the ends of the open switch in the circuit is (ignore the variation in magnetic field near the ends of the solenoid)

An air cored solenoid with length 30 cm, area of cross-section 25 cm^(2) and number of turns 500 carries a current of 2.5 A . The current is suddenly switched off in a brief time of 10^(-3) s. How much is the average back e.m.f. induced across the ends of the open switch in the circuit ? Ignore the variation in magnetic field near the ends of the solenoid.

An air-cored solenoid with length 30 cm, area of cross-section 25cm^(2) and number of turns 500, carries a current of 2.5 A. The current is suddenly switched off in a brief time of 10^(-3)s . How much is the average back emf induced across the ends of the open switch in the circuit? Ignore the variation in magnetic field near the ends of the solenoid.

An air-cored solenoid with length 30 cm, area of cross-section 25 "cm"^2 and number of turns 500, carries a current of 2.5 A. The current is suddenly switched off in a brief time of 10^(-3) s. How much is the average back emf induced across the ends of the open switch in the circuit ? Ignore the variation in magnetic field near the ends of the solenoid.

An air cored solenoid with length 30 cm, area of cross-section 25 cm^(2) and number of turns 500 carries a current of 2.5 A . The current is suddenly switched off in a brief time of 10^(-3) s. How much is the average back e.m.f. induced across the ends of the open switch in the cuicuit ? Ignore the variation in magnetic field near the ends of the solenoid.

An air-cored solenoid with length 30 cm, area of cross-section 25 cm^2 and number of turns 500, carries a current of 2.5 A. The current is suddenly switched off in a brief time of 10^-3s . How much is the average back emf induced across the ends of the open switch in the circuit? Ignore the variation in magnetic field near the ends of the solenoid.

An air cored solenoid with length 30 cm, area of cross section 25 cm^2 and number of turns 500, carries a current of 2.5A. The current is suddenly switched off in a brief time of 10^-3s. How much is the average back emf induced across the ends of the open switch in the circuit? Ignore the variation in magnetic field near the ends of the solenoid.

An air-cored solenoid with length 30 cm, area of cross-section 25 cm^(2) and number of turus 500, carries a current of 2.5 A. The current is suddenly switched off in a brief time of 10^(3)s . How much is the average back emf induced across the ends of the open switch in the circuit ? Ignore the variation in magnetie field near the ends of the solenoid.