For a uniformly charged ring of radius R, the electric field on its exis has the largest magnitude at a distance h from its centre. Then value of h is :
.A thin disc of radius b=2a has a concentric hole of radius a' in it.It carries uniform charge density sigma on it.If the electric field on its axis at distance 'd' from the centre is given as 'nd' then value of 'n' is
The largest magnitude the electric field on the axis of a uniformly charged ring of radius 3m is at a distance h from its centre. What is the value of h? (Take (1)/(sqrt(2))=0.7 )
A sphere of radius R has a charge density sigma . The electric intensity at a point at a distance r from its centre is
A charge Q is uniformly on a ring of radius R . Find the electric potential on the axis of ring at distance x from the centre of the ring. Sketch variation of potential with respect to x .
A thin disc of radius "b=2a" has a concentric hole of radius ' "a" ' in it (see figure).It carries uniform surface charge sigma on it.If the electric field on its axis at height 'h'(h << a) from its centre is given as 'Ch' then value of 'C' is
A hallow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre:
