Calculate electric field intensity at a point on the axis which is at distance $x$ from the centre of half ring, having total charge $Q$ distributed uniformly on it. The radius of half ring is $R$.

Q. A point charge $Q$ is located at centre of a fixed thin ring of radius $R$ with uniformly distributed charge $-Q$. The magnitude of the electric field strength at the point lying on the axis of the ring at a distance $x$ from the centre is $(x>>R)$

Q. A ring shaped conductor or radius $R$ carries a total charge $q$ uniformly distributed around it. Find the electric field at a point $P$ that lies on the axis of the ring at a distance $x$ from its centre.

Q. Charge Q is uniformly distributed over a ring of radius r .Electric field at a point on the axis is maximum at a distance x from the centre. x is equal to

Q. A point charge $q$ is located at the centre of a thin ring of radius $R$ with uniformly distributed charge $-q$. Find the magnitude of the electric field strength vector at the point lying on the axis of the ring at a distance $x$ from its centre, if $x>>R$.

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