The direction at a point on the magnetic lines of force can be taken along:
Correct answer: B. The tangent at that point
- A. Normal at that point
- B. The tangent at that point
- C. Axis of the magnetic line of force at that point
- D. Can't be taken
Explanation
The direction of the magnetic field at any point along a magnetic line of force can be determined by drawing a tangent to the line at that point. The magnetic field direction is tangent to the line, pointing in the direction that a north magnetic pole would move if placed at that point. This is consistent with the way magnetic field lines are conventionally drawn and used to visualize the magnetic field direction.
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About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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