In electrostatics, Electric charge is a feature of par ticles like protons, electrons etc. that decides the force of interaction among them. Br Write the name of the law that is used to measure the above force of interaction.

In electrostatics, Electric charge is a feature of par ticles like protons, electrons etc. that decides the force of interaction among them. Br Express the above law in vector form.

The interaction of electric charges q_1and q_2 separated by a distance r is F= 1/(4piepsilon_0)(q_1q_2)/r are the ProPerties of two magnetic poles, separated by a distance r, the force is F= (mu_0)/(4pi)(p_1p_2)/(r^2) .Name the quantities p_1 , p_2 and mu_0 .