When a current in a circular loop is equivalently replaced by a magnetic dipole
A. the pole strength m of each pole is fixed
B. the distance d between the poles is fixed
C. the product md is fixed
D. None of these
Answer:C
When a current in a circular loop is equivalently replaced by a magnetic dipole
A. the pole strength m of each pole is fixed B. the distance d between the poles is fixed C. the product md is fixed D. None of these