Bar Magnet & Magnetic Moment
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Magnetic monopoles do not exist.
Reason (R): Magnetic field lines are continuous and form closed loops.
In the light of the above statements, choose the most appropriate answer from the options given below:
Show answer and solution
Answer: (a)
- No isolated N or S pole has ever been found, so (A) is correct.
- Field lines leave N, return to S outside and go S to N inside, so they form closed loops; (R) is correct.
- Closed loops have no start or end point, which is exactly why there is no source (monopole). So (R) explains (A).
- So the answer is (a).