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QPage 276: Q3: HC Verma: Concepts of Physics - Volume 2 Permanent Magnets Page 276: Q3 Solution: When a current in a circular loop is equivalently replaced by a …

When a current in a circular loop is equivalently replaced by a magnetic dipole,

Multiple Choice Options

  • A the pole strength mm of each pole is fixed
  • B the distance dd between the poles is fixed
  • C the product mdmd is fixed
  • D none of the above

Step-by-Step Verified Solution

**Answer:** (c) the product md is fixed. **Step-by-Step Explanation:** The magnetic moment M = md is fixed for the equivalent dipole. The individual m and d may vary.

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