A condenser is charged using a constant current. The ratio of the magnetic field at a distance of `(R )/(2)` and `R` from the axis of condenser (`R` is the radius of plate) while charging is

A condenser is charged using a constant current. The ratio of the magnetic fields at a distance of R/2 and R from the axis is (R is the radius of plate )

A condenser is charged using a constant current. The ratio of the magnetic fields at a distance of R/2 and R from the axis is (R is the radius of plate )

What is the magnetic field at a distance R from a coil of radius r carrying current l ?

A sphere of radius R carries charge such that its volume charge density is proportional to the square of the distance from the centre. What is the ratio of the magnitude of the electric field at a distance 2 R from the centre to the magnitude of the electric field at a distance of R//2 from the centre?

A sphere of radius R carries charge such that its volume charge density is proportional to the square of the distance from the centre. What is the ratio of the magnitude of the electric field at a distance 2 R from the centre to the magnitude of the electric field at a distance of R//2 from the centre?

A circular coil of radius 2R is carrying current 'i' . The ratio of magnetic fields at the centre of the coil and at a point at a distance 6R from the centre of the coil on the axis of the coil is