The linear charge density on a ring of radius R is `lambda=lambda_0 sin (theta)` where `lambda_0` is a constant and `theta` is angle of radius vector of any point on the ring with x-axis. The electric potential at centre of ring is

The linear charge density on a dielectric ring of radius R vanes with theta as lambda = lambda_0 cos theta//2 , where lambda_0 is constant. Find the potential at the center O of the ring [in volt].

The linear charge density on a dielectric ring of radius R vanes with theta as lambda = lambda_0 cos theta//2 , where lambda_0 is constant. Find the potential at the center O of the ring [in volt].

A half ring of radius r has a linear charge density lambda .The potential at the centre of the half ring is

A half ring of radius r has a linear charge density lambda .The potential at the centre of the half ring is

A semicircular wire is uniformly charged with linear charge density dependent on the angle theta from y -direction as lambda=lambda_(0) |sin theta| , where lambda_(0) is a constant. The electric field intensity at the centre of the arc is

A circle of radius a has charge density given by lambda=lambda_(0)cos^(2)theta on its circumference, where lambda_(0) is a positive constant and theta is the angular position of a point on the circle with respect to some reference line. The potential at the centre of the circle is

A circle of radius a has charge density given by lambda=lambda_(0)cos^(2)theta on its circumference, where lambda_(0) is a positive constant and theta is the angular position of a point on the circle with respect to some reference line. The potential at the centre of the circle is

A thin nonconducting ring of radius R has a linear charge density lambda = lambda_(0) cos varphi , where lambda_(0) is a constant , phi is the azimutahl angle. Find the magnitude of the electric field strength (a) at the centre of the ring , (b) on the axis of the ring as a function of the distance x from its centre. Investegation the obtained function at x gt gt R .

A thin nonconducting ring of radius R has a linear charge density lambda = lambda_(0) cos varphi , where lambda_(0) is a constant , phi is the azimuthal angle. Find the magnitude of the electric field strength (a) at the centre of the ring , (b) on the axis of the ring as a function of the distance x from its centre. Investegation the obtained function at x gt gt R .