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Question 3: NCERT Solutions for 12th Class Physics: Chapter 6-Electromagnetic Induction
A long solenoid with 15 turns per cm has a small loop of area 2.0 cm2 placed inside the solenoid normal to its axis. If the current carried by the solenoid changes steadily from 2.0 A to 4.0 A in 0.1 s, what is the induced emf in the loop while the current is changing?
Solution:
When the current changes through the solenoid, a change in magnetic field also take place within it. Initial magnetic field in solenoid,
Final magnetic field, B2 = μ0nI2
Check the complete chapter with solutions.
NCERT Solutions for 12th Class Physics: Chapter 6-Electromagnetic Induction