MHT CET20242 May 2024Evening ShiftPhysicsElectrostaticsActual
Four point charges each +q is placed on the circumference of a circle of diameter 2 d in such a way that they form a square. The potential at the centre is proportional to
Options
- Aq ^2 ~d ^2
- Bq d
- Cd q
- Dd ^2 q ^2
Correct answer
B. q d
Step-by-step solution
As charges are placed on the circumference of circle, each charge is at a distance, r = Diameter 2 = 2 ~d 2 = d Potential at centre due to four point charges aligned & = 1 4 ₀ [ q ~d + q ~d + q ~d + q ~d ] & = 1 4 ₀ 4 q ~d =4 K [ q ~d ] aligned Potential q d