Post-UTME Physics 2018 Objective — Question 19
Question 19 of 20 from the Post-UTME Screening (Post-UTME) Physics 2018 Objective paper, with the correct answer and a full explanation.
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A neutral point in a magnetic field is defined as a point where the
- A. magnetic south pole is equal to the magnetic north pole
- B. horizontal component of the earth's flux density is zero
- C. Resultant magnetic flux density is zeroCorrect
- D. attractive force is equal to the repulsive force.
Explanation
A neutral point is where the resultant magnetic flux density (from all sources, including the earth's field) is zero.
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