What is Vector form of columb law​

Answers (1)

Consider two charges q_1 and q_2 separated by a distance r. Let the position vectors of  q_1 be r_1 and that of q_2 be r_2. Then the force due to q_2 on q_1 as shown in figureF_{12} is directed along the unit vector r_{12} and

\\ F_{12}=\frac{Kq_1q_2}{r^2}\hat r_{12}\\here\ \hat r_{12}=\frac{\vec r_2-\vec r_1}{|r_2-r_1|}=\frac{\vec r_{12}}{r}\\ F_{12}=\frac{Kq_1q_2}{r^3}\vec r_{12}

Is the vector form of Coulombs law

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