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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)

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)

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2 Answers

Samyak Jain
333 Points
one year ago
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 .
Khimraj
3007 Points
one year ago
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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