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

P.E. = 0

$\frac { \mathrm { kQ } _ { 0 } ( - \mathrm { q } ) } { \ell }$ × 2 + = 0