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Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsPotential & potential energyEasy2 minPYQ_2020

PhysicsEasysingle choice

Three charges $Q_{0}, - q$ and $- q$ are placed at the vertices of an isosceles right angle triangle as in the figure. The net electrostatic potential energy is zero if $Q_{0}$ is equal to

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Answer:

Solution:

$U = \frac{K Q_{0} (- q)}{l} \times 2 + \frac{K (- q) (- q)}{l \sqrt{2}} = 0$

$\frac{K q}{l} [- 2 Q_{0} + \frac{q}{\sqrt{2}}] = 0$

$∴$ $Q_{0} = \frac{q}{2 \sqrt{2}} = \frac{q}{\sqrt{8}}$

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

⏱ 2mℹ️ Source: PYQ_2020

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