State and explain coulomb's law in magnetism.

Explanation

It states that the force of attraction or repulsion F between two magnetic poles of strength m, and m, separated by a distance r is directly proportional to the product of pole strengths and inversely proportional to the square of the distance between there centres `i.e. F mu (m_1m_2)/r^2 " or " F = k (m_1m_2)/r^2`. Where k is magnetic force constant.
`In S.I k=(mu_0)/(4pi)=10^(-7) Wb A^(-1)m^(-1). :. F=(mu_0)/(4pi)(m_1m_2)/r^2`.