Question 466: Electrostatics & Capacitance

Question

Determine the electric dipole moment of the system of the three charges, placed on the vertices of an equilateral triangle, as shown in the figure :
![](https://imagex.cdn.examgoal.net/LRkwSP0gVmxi0Xwic/R5wVG0vhs2lrGYhpu8vRpVcOeZuVd/9vSZEeCBihRChp5BEbkkmo/image.png)

Accepted Answer

$\left| {{P_1}} \right| = $ q(d)
$\left| {{P_2}} \right| = $ qd
|Resultant| $=$ 2 P cos30
o
2 qd$\left( {{{\sqrt 3 } \over 2}} \right)$ = $\sqrt 3 $  qd
![](https://imagex.cdn.examgoal.net/A2alDINlOKowk0NvZ/29XNMXArbtH4fW9m2XEn6Q4hK5jCy/qjBstS9TFE1dnhluoULCdg/image.png)

Answer

$2q\ell \widehat j$

Answer

$\left( {q\ell } \right){{\widehat i + \widehat j} \over {\sqrt 2 }}$

Answer

$\sqrt 3 \,q\ell {{\widehat j - \widehat i} \over {\sqrt 2 }}$

Answer

$ - \sqrt 3 \,q\ell \widehat j$

Electrostatics & Capacitance

Determine the electric dipole moment of the system of the three charges, placed on the vertices of an equilateral triangle, as shown in the figure :

Choose the correct answer: