NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Electromagnetic Induction
NEET · Physics · Electromagnetic Induction
Assertion (A): It is more difficult to move a magnet into a coil...
Assertion (A): It is more difficult to move a magnet into a coil with more loops
Reason (R): This is because emf induced in each current loop resists the motion of the magnet
Reason (R): This is because emf induced in each current loop resists the motion of the magnet
Options
- ABoth and are true and is a correct explanation for
- BBoth and are true but is not a correct explanation for
- C is true, is false
- D is false, is true
Correct answer
A. Both and are true and is a correct explanation for
Step-by-step solution
Induced emf in a coil is
Therefore, more number of turns means more emf induced and negative sign indicates the opposite nature of the magnetic field due to coil when magnet is moved into the coil.
Thus, it is more difficult to move a magnet into a coil with more loops because emf induced in each current loop resists the motion of the magnet.