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Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsPotential & potential energyEasy2 minPYQ_2020

PhysicsEasysingle choice

A point charge is surrounded by eight identical charges at a distance $r$ as shown in the figure. How much work is done by the force of electrostatic repulsion when the point charge at the centre is moved to infinity?

Options:

Answer:

Solution:

Work done $= - Δ U = U_{i} - U_{f}$

$= 8 \times \frac{q \times q}{4 π ε_{0} r} - 0 = \frac{8 q^{2}}{4 π ε_{0} r}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:ElectrostaticsSubtopic:Potential & potential energy

⏱ 2mℹ️ Source: PYQ_2020

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