Directions: In the following questions, a statement of assertion (A) ...
Magnetic field lines never intersect each other as for two lines to intersect, there must be two north directions at a point, which is not possible.
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Directions: In the following questions, a statement of assertion (A) ...
Assertion (A): Magnetic field lines never intersect.
Reason (R): At a particular point, the magnetic field has only one direction.
The correct answer is option A, which states that both the assertion (A) and reason (R) are true, and the reason (R) is the correct explanation of the assertion (A).
Explanation:
Assertion (A): Magnetic field lines never intersect.
Magnetic field lines are imaginary lines that are used to represent the direction and strength of the magnetic field around a magnet or a current-carrying conductor. These lines are continuous curves that form closed loops. One of the fundamental properties of magnetic field lines is that they never intersect each other.
Reason (R): At a particular point, the magnetic field has only one direction.
At any given point in space, the magnetic field has a specific direction. This direction is determined by the orientation of the magnetic field lines at that point. The direction of the magnetic field at a point is the tangent to the magnetic field line passing through that point. Therefore, at a particular point, the magnetic field has only one direction.
Explanation of the Correct Answer:
The correct answer to this question is option A. The reason (R) provided in the question is the correct explanation of the assertion (A). The assertion states that magnetic field lines never intersect, and the reason explains why this is the case - because at a particular point, the magnetic field has only one direction. Since each magnetic field line represents the direction of the magnetic field at every point along its path, the fact that the magnetic field has only one direction at a particular point ensures that the magnetic field lines do not intersect. If the magnetic field lines were to intersect, it would imply that the magnetic field has multiple directions at that point, which is not possible.
Hence, the correct answer is option A, where both the assertion (A) and reason (R) are true, and the reason (R) is the correct explanation of the assertion (A).
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