Two electric dipoles A, B with dipole... | Electrostatics | JEE Main 2019

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JEE Main 2019

10-01-2019 S1

Question

Two electric dipoles, $A, B$ with respective dipole moments $\overrightarrow{\mathrm{d}}_{\mathrm{A}}=-4 q a \hat{\mathrm{i}}$ and $\overrightarrow{\mathrm{d}}_{\mathrm{B}}=-2 q a \hat{\mathrm{i}}$ are placed on the x axis with a separation $R$, as shown in the figure

The distance from A at which both of them produce the same potential is

Select the correct option:

A

$\frac{\sqrt{2} R}{\sqrt{2}-1}$

B

$\frac{\sqrt{2} R}{\sqrt{2}+1}$

C

$\frac{\mathrm{R}}{\sqrt{2}-1}$

D

$\frac{\mathrm{R}}{\sqrt{2}+1}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

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