A short electric dipole has a dipole moment $$15$$×$$10$$−$$8$$ C−m. A point charge of $$10$$ μC is placed at a distance of $$10$$ cm on the dipole axis from the centre of the dipole. Then potential energy stored on the $$charge-dipole$$ system is

Question

A short electric dipole has a dipole moment $$15$$×$$10$$−$$8$$ C−m. A point charge of $$10$$ μC is placed at a distance of $$10$$ cm on the dipole axis from the centre of the dipole. Then potential energy stored on the $$charge-dipole$$ system is

Infinity Learn · Accepted Answer

Potential at the point due to the dipole, $V = \frac{1}{4 π \in_{0}} \frac{p}{r^{2}} = \frac{9 \times 10^{9} \times 15 \times 10^{- 8}}{{(0 .1)}^{2}} volt$

$=135 \times 10^{3} volt$

$∴$ Electro static potential energy stored in the system $= VQ = 135 \times 10^{3} \times 10 \times 10^{- 6} J = 1 .35 J$

Potential Energy of dipole in external field

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A short electric dipole has a dipole moment $15 \times 10^{- 8} C - m$ . A point charge of 10 $μC$ is placed at a distance of 10 cm on the dipole axis from the centre of the dipole. Then potential energy stored on the charge-dipole system is

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Potential Energy of dipole in external field

Remember concepts with our Masterclasses.

A short electric dipole has a dipole moment 15×10−8 C−m. A point charge of 10 μC is placed at a distance of 10 cm on the dipole axis from the centre of the dipole. Then potential energy stored on the charge-dipole system is

Potential at the point due to the dipole, V=14π∈0pr2=9×109×15×10-8(0.1)2 volt =135×103 volt∴ Electro static potential energy stored in the system =VQ=135×103×10×10−6 J=1.35 J

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A short electric dipole has a dipole moment $15 \times 10^{- 8} C - m$ . A point charge of 10 $μC$ is placed at a distance of 10 cm on the dipole axis from the centre of the dipole. Then potential energy stored on the charge-dipole system is