An infinite number of charges each equal to q are placed along x-axis at `xx=1, xx=2, xx=4, xx=8…` and so on.
Find the electric field at the point `xx=0` due to this set of charges.

An infinite number of charges each equal to q are placed along x-axis at xx=1, xx=2, xx=4, xx=8… and so on. What will be the electric field, if in the above set up, the consecutive charges have opposite sign?

An infinite number of charges, each equal to q, are placed to q, are placed along the x-axis at x =1, x = 2, x = 4, x = 8 and so on. What is the potential at x = 0 due to this set of charges ?

An infinite number of charges, each equal to 4mu C are placed alolng x-axis at x=1m, 2m, 4m, 8 m and so on. Find the total force on a charge of 1C placed at the origin.

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?

In vacuum, four charges each equal to q are placed at each of the four vertices of a square. Find the intensity and potential of the electric field at the point of intersection of two diagonals.

Charges 4Q, q and Q are placed along x-axis positions x=0, x= (l)/(2) and x=l respectively. The value of q so that the force on charge Q is zero is

Two electric charge +8q and -2q, are placed at x=0 and x=L respectively. At what point on the x-axis , net electric field intensity due to two becomes zero ?

Two points having charges q_(1) and q_(2) are placed at the coordinates (a, 0, 0) and (0, b, 0) respectively. Find out the electric field intensity of a third point charge placed at (0, 0, c) due to those two charges.

An electric dipole consists of two charges +- 20 xx 10^-6 C separated by a distance 2 xx 10^-3 m . Find electric field at a distance 0.10 m from the centre of the dipoie on the perpendicular bisector.