An infinite number of charges each of magnitude q are placed on x-axis at distance of 1, 2, 4, 8, ..... Meter from the origin respectively. Find intensity of the electric field at origin.

An infinite number of charges each q are placed in the x-axis at distances of 1, 2, 4, 8, ………meter from the origin. If the charges are alternately positive and negative find the intensity of electric field at origin.

An ionfinite number of charges each q are placed in the x-axis at distances of 1,2,4,8 meter from the origin. If the charges are alternately positive and negative find the intensity of electric field at origin.

Infinite number of spheres , each of mass m are placed on the X- axis at distance 1,2,4,8,16, … meter from origin . The magnitide of the gravitational field at the origin is

An infinite number of charges, each of value q, are placed on the x-axis at the points x = 1 , x = 2, x = 4 , x = 8, ………. . Find the potential and intensity due to these charges at x = 0. If the charges are alternately positive and negative what will be the potential and intensity at the same point?

A number of particles each of mass 0.75kg are placed at distances 1m, 2m, 4m, 8m etc. from origin along positive X axis. the intensity of gravitational field at the origin will be -