AP EAMCET202420 May 2024Evening ShiftPhysicsElectrostaticsActual
Three point charges +q,+2 q and +4 q are placed along a straight line such that the charge +2 q lies at equidistant from the other two charges. The ratio of the net electrostatic force on charges +q and +4 q is
Options
- A1: 1
- B1: 2
- C1: 4
- D1: 3
Correct answer
D. 1: 3
Step-by-step solution
aligned & F₁= k(q)(2 q) r^2 + k(q)(4 q) 4 r^2 = 12 kq ^2 4 r^2 & F₂= k(4 q)(2 q) r^2 + k(4 q)(q) 4 r^2 = 36 kq ^2 4 r^2 & F₁ F₂ = 12 36 =1: 3 aligned