NEET Physics Ampere's Law Assertion Reason Question
Assertion (A): The magnetic field inside a long straight conductor carrying current is directly proportional to the radial distance from the axis. | Reason (R): Ampere's Law relates the line integral of the magnetic field around a closed loop to the current passing through the loop.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
Correct Answer
Detailed Explanation
According to NCERT, inside a long straight conductor, the magnetic field is directly proportional to the distance from the axis, as derived using Ampere's Law. This makes R the correct explanation for A.
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