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Question: Answered & Verified by Expert
Three charges $\mathrm{Q},+\mathrm{q}$ and $+\mathrm{q}$ are placed at the vertices of a right angled isoscels triangle as shown in the figure. If the net electrostatic potential energy of the system is zero, the value of $Q$ is

PhysicsElectrostaticsAP EAMCETAP EAMCET 2017 (26 Apr Shift 2)
Options:
  • A $\begin{aligned} & \frac{-2 q}{2+\sqrt{2}} \end{aligned}$
  • B $\begin{aligned} &\frac{+q}{2+\sqrt{2}}\end{aligned}$
  • C $\begin{aligned} & \frac{+2 q}{2+\sqrt{2}}\end{aligned}$
  • D $\begin{aligned} & \frac{-q}{2+\sqrt{2}}\end{aligned}$
Solution:
1431 Upvotes Verified Answer
The correct answer is: $\begin{aligned} & \frac{-2 q}{2+\sqrt{2}} \end{aligned}$
No solution. Refer to answer key.

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