A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be______________?
Correct answer: B. M/2
- A. M
- B. M/2
- C. 2 M
- D. M/4
Explanation
Magnetic moment equals pole strength multiplied by magnetic length. Cutting the magnet into two equal pieces makes the pole strength or effective length half, so each piece has moment M/2.
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