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Question: Answered & Verified by Expert
Assertion (A) : It is more difficult to push a magnet into a coil with more number of turns.

Reason (R) : The emf induced in a coil opposes the motion of a magnet when it is moved towards the coil.
PhysicsElectromagnetic InductionAP EAMCETAP EAMCET 2017 (26 Apr Shift 1)
Options:
  • A A is false, R is true
  • B Both A and R are true. R is correct explanation of A
  • C A is true, R is false
  • D Both A and R are true. R is not correct explanation of A
Solution:
1778 Upvotes Verified Answer
The correct answer is: Both A and R are true. R is correct explanation of A
(A) It is more difficult to push a magnet into a coil with large turns because of opposition caused by induced current.
(B) The emf induced in a coil always opposes the motion of a magnet when it is moved towards the coil. It was experimentally verified by lenz law.
So both $A$ and $R$ are true. $R$ is correct explanation of $A$.

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