Question 725: Electrostatics & Capacitance

Question

Two point charges $-$q and +q are placed at a distance of L, as shown in the figure.
The magnitude of electric field intensity at a distance R(R >> L) varies as:
![](https://app-content.cdn.examgoal.net/fly/@width/image/1l660lmgs/3441d6c4-acc2-4108-828b-f8481518b9dc/f77973c0-0efd-11ed-af28-a101285fba12/file-1l660lmgt.png?format=png)

Accepted Answer

For R >> L, arrangement is an electric dipole
$E = {{2p} \over {4\pi {\varepsilon _0}{R^3}}}$; where $p = qL$
$E \propto {1 \over {{R_3}}}$

Answer

${1 \over {{R^2}}}$

Answer

${1 \over {{R^3}}}$

Answer

${1 \over {{R^4}}}$

Answer

${1 \over {{R^6}}}$

Electrostatics & Capacitance

Two point charges -q and +q are placed at a distance of L, as shown in the figure. The magnitude of electric field intensity at a distance R(R >> L) varies as:

Choose the correct answer: