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

the pole strength

m

of each pole is fixed

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the distance

d

between the poles is fixed

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the product

m d

is fixed

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None of these

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Solution

The correct option is D the product $m d$ is fixed
Magnetic moment is the product of pole strength and the distance between the poles.
If the loop is replaced by an equivalent magnetic dipole, the product md is fixed.

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Similar questions

Q. 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 the above

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

The correct option is D the product md is fixedMagnetic moment is the product of pole strength and the distance between the poles.If the loop is replaced by an equivalent magnetic dipole, the product md is fixed.

The correct option is D the product $m d$ is fixed
Magnetic moment is the product of pole strength and the distance between the poles.
If the loop is replaced by an equivalent magnetic dipole, the product md is fixed.