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Infinite Line of Charge

A thin ring o...

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A thin ring of radius Rhas a charge Q non-uniformly distributed on it. The electrostatic potential at the center of the ring will be

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Q. A ring of radius R has charge -Q distributed uniformly over it. Calculate the charge that should be placed at the center of the ring such that the electric field becomes zero at a point on the axis of the ring at distant R from the center of the ring

Q. Assertion :For a non-uniformly charged thin circular ring with net charge zero, the electric field at any point on axis of the ring is zero. Reason: For a non-uniformly charged thin circular ring with net charge zero, the electric potential at each point on axis of the ring is zero.

Q. A non conducting rod AB of length

\sqrt{3} R

, uniformly distributed charge of linear charge density

λ

and.a non-conducting ring of uniformly distributed charge Q, are placed as shown in the figure. Point A is the centre of ring and line AB is the axis of the ring, perpendicular to plane of ring. The electrostatic interaction energy between ring and rod is

Q. Statement (1) : For a non-uniformly charged thin circular ring with net charge zero, the electric potential at each point on the axis of the ring is zero.
Statement (2) : For a non-uniformly charged thin circular ring with net charges as zero, electric field at any point on the axis of the ring is zero.

Q. Charge q is uniformly distributed over a thin half ring of radius R. The electric field at the centre of the ring is :

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