A point charge q is placed at O as shown below. Is `V_A-V_B` positive, negative or zero, if q is a (i) positive, (ii) negative charge

The atom has _____ Positive charge negative charge some times positive and sometimes negative no charge

Who named the two charges positive and negative?

A positive charge +Q is placed at a point. A circle of radius r is drawn with the point as the centre. Another charge q is carried once in that circular path. What will be the work done?

Two positive charges of magnitude 'q are placed at the ends of a side (side 1) of a square of side '2a'. Two negative charges of the same magnitude are kept at the other corners. Starting from rest, if a charge Q moves from the middle of side 1 to the centre of square, its kinetic energy at the centre of square is

A point-charge q is placed at the origin. How does the electric field due to the charge vary with distance r from the origin?

Two equal -ve charges -q are fixed at the points (0, a) and (0, -a) on the y-axis. A positive charge Q is released from rest at the point (2a, 0) on the x-axis. The charge will

A charge Q is placed at each of the two opposite corners of a square, A charge q is placed at each of the two other opposite corners of the square. If the resultant electric force field on Q is zero, then how Q and q are related ?

Three point charge are lying along the x-axis. IF two charges q_(1)=-2C and q_(2)=-3C are placed at x_(1)=2 m and x_(2)=-1m , repectively and the third positive charge is so located between the first two charges that the resultant force on it is zero, find the position of the third charge.

A charge q is placed at the centre of the line joining tow equal charges Q. For what value of q will the system of the three charges be in equalilibrium ?