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 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 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?

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 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.

Two point charges of values -20 esu and +20 esu are placed on the x-axis at x = -10cm and x = +10cm respectively. Calculate The potentials at the middle of them

There are charges +q at each of the points x = x_(0), x = 3x_(0), x = 3x_(0) ……..up to infinity on the x-axis and charges -q at each of the points x = 2x_(0), x = 4x_(0), x = 6x_(0) , ……up to infinity. Here x_(0) is a positive constant. What is the potential at the orgin due to the above system of charges?

Three point charges each equal to q are placed on the vertices of an equilateral triangle of side l. The potential energy of the system is

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

Four point charges -Q, -q, 2q and 2Q are placed, one at each comer of the square. The relation between Q and q for which the potential at the centre of the square is zero is.

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.