The quarter disc of radius R (see figure) has a uniform surface charge density `sigma`.
(a) Find electric potential at a point (O,O,Z)
(b). Find the Z component of electrif field at (O,O,Z)

Find electric potential at center O . (a)

A quarter ring of radius R is having uniform charge density lambda . Find the electric field and potential at the centre of the ring.

There is a hemisphere of radius R having a uniform volume charge density rho . Find the electric potential and field at the centre

A uniform disc of radius R is charged with a uniform surface charge density sigma . Find the electric potential due to the charges on the disc at a point on its edge. [(sigmaR)/(piin_(0))]

A hemispherical bowl of radius R carries a uniform surface charge density sigma . Find the potential at the topmost point A, taking potential at infinity to be zero.

A non-conducting semi circular disc (as shown in figure) has a uniform surface charge density sigma . The ratio of electric field to electric potential at the centre of the disc will be

A non-conducting semi circular disc (as shown in figure) has a uniform surface charge density sigma . The ratio of electric field to electric potential at the centre of the disc will be

A solid sphere of radius 'R' has a cavity of radius (R)/(2) . The solid part has a uniform charge density 'rho' and cavity has no charge. Find the electric potential at point 'A'. Also find the electric field (only magnetude) at point 'C' inside the cavity