Question

2 point charges 4Q and 2Q are separated by distance X. Fish with a third point charge q be placed for it to be being in equilibrium.

Answer 1

Answer:

Charge q should be negative to achieve equilibrium Also if charge is placed in region (1) or (3) the charge will attract the charge in the middle while the other positive charge pushes the middle charge towards q. So only region (2) is appropriate Let distance between 4Q and q be ‘d’ then for equilibrium ← Prev QuestionNext Question → Read more on Sarthaks.com - https://www.sarthaks.com/365954/fixed-point-charged-separated-distance-where-third-point-charge-should-placed-equilibrium

Explanation: