Three equal charges Q are placed at the three corners of an equilateral triangle of side length a. Work done in shifting a charge q from infinity to the centroid of the triangle is

Three equal charges of +q C each placed at the three corners of an equilateral triangle. Find the total force experienced by a unit charge placed at the centroid of the triangle.

Four equal charges Q are placed at the four corners of a square of each side is 'a'. Work done in removing a charge -Q from its centre to infinity is

Four equal charges Q are placed at the four corners of a square of each side is 'a'. Work done in removing a charge -Q from its centre to infinity is

Three charge -q,+q and -q are placed at the cornors of an equilateral triangle of side a The resultant electric froce an a charge +q placed at a the centroid O of the triangle is

Three identical point charges Q are placed at the three corners of an equilateral triangle of side length a. Find the electric potential at points O and M due to the three charges.

Three particles each of mass m are placed at the three corners of an equilateral triangle of side a. The work done on the system to increase the sides of the triangle to 2a is:

Three charges -q +q and +q are placed at the corner of the equilateral triangle of side a as shown in the figure.The net electric potential at the centroid of the triangle will be (k=(1)/(4 pi varepsilon_(0)))