Question

Three charges Q₀, – q and – q are placed at the vertices of an isosceles right angle triangle as in the figure. The net electrostatic potential energy is zero if Q₀ is equal to –

• A. $\frac{q}{4}$
• B. $\frac{2q}{\sqrt{32}}$
• C. $\sqrt{2q}$
• D.
  • q

Answer 1

Answer: (B)

$\frac{2q}{\sqrt{32}}$

Answer 2

U = × 2 += 0

= 0

\ Q₀ = = $\frac { 2 q } { 4 \sqrt { 2 } }$ =