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Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsdipoleMedium2 minPYQ_2019

PhysicsMediumsingle choice

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

Options:

Answer:

Solution:

$|{\vec{P}}_{1}| = q l$

$|{\vec{P}}_{2}| = q l$

Angle between them $60^{o}$

$∴$ Resultant dipole moment $P = \sqrt{{(q l)}^{2} + {(q l)}^{2} + 2 {(q l)}^{2} \cos 60^{o}}$

$= \sqrt{3}$ $ql$

As $|{\vec{P}}_{1}| = |{\vec{P}}_{2}|$ direction of resultant is along negative y axis thus option is $- \sqrt{3} q l \hat{j}$

Stream:JEESubject:PhysicsTopic:ElectrostaticsSubtopic:dipole

⏱ 2mℹ️ Source: PYQ_2019

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