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 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 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?

A cube placed in vacuum contains a charge of 9 xx 10^( - 9 ) C . What will be the electric flux linked with each face of the cube ?

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 ?

In a region of free space the average electric field of an electromagnetic wave is 9 xx 10^-4 NC^-1 . What is the magnetic field in that region?

Eleven equal point charges, all of them having a charge +Q, are placed at all the hour positions of a circular clock of radius r, except at the 10 hour position. What is the electric field strength at the centre of the clock ?