question_answer

Draw a diagram to show lines of force in a plane containing two equal point charges of opposite sign separated by a small distance. Giving reason, indicate on the diagram a point where a small positive charge experiences a force parallel to the line joining the two charges.                             

Answer:

                As shown in Fig. electric field at any point P on the equatorial line is parallel to the line joining the two charges. So if a small positive charge is placed at such a point, it will experience a force parallel to the line joining the two charges.