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Question 15: NCERT Solutions for 12th Class Physics: Chapter 6-Electromagnetic Induction
An air cored solenoid with length 30 cm, area of cross-section 25 cm2 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.
Solution:
Magnetic field inside solenoid
Check the complete chapter with solutions.
NCERT Solutions for 12th Class Physics: Chapter 6-Electromagnetic Induction