Question

Six charges are placed at the corner of a regular hexagon as shown. If an electron is placed at the centre O, force on it will be:

• A. zero
• B. along OF
• C. along OC
• D. none of these

Answer 1

The correct option is D none of these

The charges will be balanced by their counterparts on opposite side. So eventually the charges remaining will be $2q$ on B and $3q$ on D.
Since the charge distribution is unsymmetrical, the net force on charge would be skewed towards D.