Question

1
Two equal and similar charges are placed along a straight line. A third equal and
similar charge is placed midway between the two charges. Then, system will​

Answer 1

The system will be in stable equilibrium.

Explanation:

• The question statement says that two equal and same charges are placed on a straight line with a mid charge having equal charge density.
• Along the line, all the charges are joining and therefore the system will be in equilibrium.
• The force on the middle charge exerted by the remaining two charges will be equal to = KQ^2 / (r/2)^2
• Thus it will be in stable equilibrium.