Consider the charges q, q and `-q` placed at the vertices of an equilateral triangle as shown in Fig. What is the force on each charge ?

Three positive charge 3 esu, 4 esu and 5 esu are placed at the vertices of an equilateral triangle of side 10 cm. What is the force acting the largest charge?

Three charges are placed at the vertices of an equilateral triangle of side l. Each of the charges is q. Find out the force on a charge Q placed at the center of mass of the triangle.

Three charges q,q and -q are kept in the three vertices of an equilateral triangle of side l. Find out the resultant force on each of the charges.

Three point charges q, 2q and 3q are placed at the vertices of an equilateral triangle of side ‘a’. Find the electric potential and intensities at the geometric centre of the triangle.

Three particles, each of mass m, are placed at the vertices of an equilateral triangle. What is the force acting on a particle of mass 2m placed at the centroid D of the triangle ?

Electric charge q, q and -2q are placed at the corners of an equilateral triangle ABC of side L. The magnitude of electric dipole moment of the system is

Three charges, each of value q, are placed at the vartices of an equilateral triangle. A fourth charge Q is placed at the centre of the triangle. (i) If Q=-q , will the charge at the vertices move towards the centre of fly away from it? (ii) For what value of Q will the charges remain stationary?