In the following four situations charged particles are equal distance from the origin. Arrange them the magnitude of the net electric field at origin greatest first

In the following four cases, charged particles are at equal distances from the origin. Arranged them in the descending order of magnitude of the net electric field at the origin.

The figure show four situations in which charged particles are at equal distances from the origin. If E_1,E_2,E_3 and E_4 be the magnitude of the net electic field at the origin in four situations i, ii, iii and iv respectively then

The figure show four situations in which charged particles are at equal distances from the origin. If E_1,E_2,E_3 and E_4 be the magnitude of the net electic field at the origin in four situations i, ii, iii and iv respectively then

Which of the following points lies the greatest distance from the origin in the xy-plane?

All the particles of a body situated at distance R from the origin. The distance of the center of mass of the body from the origin is

All the particles of a body are situated at a distance of X from origin. The distance of the center of mass from the origin is

All the particles of a body situated at distance d from the origin. The distance of the center of mass of the body from the origin is

In fig. a plastic rod in the form of circular are with charge +Q unformly distributed on it produces an electric fieldof magnitude E at the centre of curvature (at the origin). In fig., more circular rods with identical umform charges +Q are addes until the circle is complete. A fifth arrangement (which would be labeled e) is like taht in d except that the roed in the fourth quadrant has charge-Q. Rank all the five arrangements according to the magnitudes of the electric field at the center of curvature, greatest first.