Two charges -q and +q are located at points (0, 0, -a) and (0, 0, a), respectively. What is the electrostatic potential at the points (0, 0, z) and (x, y, 0) ?

Two charges -q and +q are located point (0, 0, -a) and (0, 0, a) respectively: What is the electrostatic potential at the points (0,0,z) and (x,y,0) ?

Two charges -q and +q are located at points (0, 0, -a) and (0, 0, a), respectively. How much work is done in moving a small test charge from the point (5,0,0) to (-7,0,0) along the x-axis? Does the answer change if the path of the test charge between the same points is not along the x-axis?

Two charges -q and +q are located point (0, 0, -a) and (0, 0, a) respectively: Obtain the dependece of potential on the distance r of the point from the origin when r/2 gtgt 1 .

Two charges of magntiudes - 2Q and + Q are located at points (a,0) and (4a,0) respectively. What is the electric flux due to these charges through a sphere of radius 3 a with the centre at the origin?

Point charges + 4q, -q and +4 q are kept on the X-axis at points x = 0, x = a and x = 2 a respectively

Two point charges of magnitude +q and -q are placed at (-d/2, 0, 0) and (d/2, 0, 0) respectively. Find the equation of the equipotential surface where the potential is zero.

A system has two charges q_A = 2.5 xx 10^-7 C and q_B = -2.5 xx 10^-7 C located at points A: (0, 0, -15 cm) and B: (0,0, +15 cm), respectively. What are the total charge and electric dipole moment of the system?

Show that the points (1, 0), 6, 0), (0, 0) are collinear.

A dipole, with its charges, -q an +q, are located at the ponit (0,-b,0) and (0,+b,0), is present in uniform electric field E. the equipotential surfaces of this field are planes parallel to the YZ-planes. What is the direction of the electric field E?