A charge q is divided into three equal parts and placed symmetrically on a circle of radius r. The same charge is divided into four equal parts and placed symmetrically on the same circle. The electric field intensities at the centre of the circle in two situations are zero
Q. The ratio of electric potentials at the centre in the two situations is

A charge q is divided into three equal parts and placed symmetrically on a circle of radius r. The same charge is divided into four equal parts and placed symmetrically on the same circle. The electric field intensities at the centre of the circle in two situations are zero Q. The potential energy of the system in first situation where the charge is divided into three equals parts is

A charge q is divided into three equal parts and placed symmetrically on a circle of radius r. The same charge is divided into four equal parts and placed symmetrically on the same circle. The electric field intensities at the centre of the circle in two situations are zero Q. The potential energy of the system in first situation where the charge is divided into three equals parts is

A charge q is divided into three equal parts and placed symmetrically on a circle of radius r. The same charge is divided into four equal parts and placed symmetrically on the same circle. The electric field intensities at the centre of the circle in two situations are zero Q. If a charge (part charge) is removed from one location in both the situations, the ratio of magnitudes of the electric field intensities at the centre is

A charge q is divided into three equal parts and placed symmetrically on a circle of radius r. The same charge is divided into four equal parts and placed symmetrically on the same circle. The electric field intensities at the centre of the circle in two situations are zero Q. If a charge (part charge) is removed from one location in both the situations, the ratio of magnitudes of the electric field intensities at the centre is

If a circle of radius 12 cm is divided into two equal parts by one concentric circle, then radius of inner circle is:

Three equal charges, each +q are placed on the corners of an equilatreal triangel . The electric field intensity at the centroid of the triangle is

Three equal charges, each +q are placed on the corners of an equilatreal triangel . The electric field intensity at the centroid of the triangle is