What happens to the force between two magneti | vedclass

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(B) The force $F$ between two magnetic poles of strengths $m_1$ and $m_2$ separated by a distance $r$ is given by Coulomb's law for magnetism: $F = k

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(B) The force $F$ between two magnetic poles of strengths $m_1$ and $m_2$ separated by a distance $r$ is given by Coulomb's law for magnetism: $F = k \frac{m_1 m_2}{r^2}$.Given that the new pole strengths are $m_1' = 2m_1$ and $m_2' = 2m_2$,and the new distance is $r' = 2r$.The new force $F'$ is given by: $F' = k \frac{(2m_1)(2m_2)}{(2r)^2}$.$F' = k \frac{4 m_1 m_2}{4 r^2} = k \frac{m_1 m_2}{r^2} = F$.Therefore,the force remains unchanged.

What happens to the force between two magnetic poles when their pole strength and the distance between them are both doubled?

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