NEET Physics Magnetic Force on Current Assertion Reason Question
Assertion (A): A straight wire segment carrying current contributes to the magnetic field at the center of a semicircular arc.
Reason (R): The magnetic field contribution from a straight segment depends on the angle between the current element and the position vector.
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
The straight segments do not contribute to the magnetic field at the center because the current element and the position vector are parallel, making the cross product zero.
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