A bar magnet of pole strength 10A-m is cut into two equal parts breathwise. The pole strength of each magnet is
A bar magnet of pole strength 10A-m is cut into two equal parts breathwise. The pole strength of each magnet is
A. 5A-m
B. 10A-m
C. 15A
D. 15A-m
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Correct Answer - A
When magnet is cut into equal parts, area of cross-section becomes half. Hence pole strength becomes half.
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