Question

The point charged Q and -2Q are placed some distance apart. If the electric field at the location of Q is E, then the electric field at the location of -2Q will be :

• A. $-\frac{E}{2}$
• B. $-\frac{3E}{2}$
• C. E
• D. 2E

Answer 1

The correct option is A $-\frac{E}{2}$

Electric field at A$=E=\frac{-2Q}{4\pi {ϵ}_o{r}^2}$

Electric field at b$=E^{\prime }=\frac{Q}{4\pi {ϵ}_o{r}^2}$

$⟹E^{\prime }=\frac{-E}{2}$

Answer-(A)