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What is the potential energy on q due to this uniformly charged circular ring of radius r? (Point q is at the centre of the circle)
Potential at the centre due to circular ring of radius r and having uniform charge Q is KQ / r .Point charge q is located at the centre of the ring.Thus, potential energy of the system = charge q x potential = q x KQ / r = KQq / r .
Steps and Understanding :1) We will find Electric Potential by writing V = K(q) / d where q is charge contained in ring. d - distance of charge from point .k = 1/4π£° where £° is permitivity in vacuum. 2) We will find Electric Field by E = -dV/dx
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