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Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsPotential & potential energyHard2 minPYQ_2012

PhysicsHardsingle choice

Four point charges $- Q, - q, 2 q$ and $2 Q$ are placed, one at each corner of the square. The relation between $Q$ and $q$ for which the potential at the centre of the square is zero, isNEET 2012 (Screening)

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Answer:

Solution:

If potential at centre is zero, then $V_{1} + V_{2} + V_{3} + V_{4} - \frac{k Q}{r} - \frac{k q}{r} + \frac{k 2 Q}{r} + \frac{k 2 q}{r} - Q - q + 2 q + 2 Q Q = 0 = 0 = 0 = - q$

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

⏱ 2mℹ️ Source: PYQ_2012

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