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Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsPotential & potential energyEasy2 minPYQ_2020

PhysicsEasysingle choice

Two insulated charged spheres of radii $R_{1}$ and $R_{2}$ having charges $Q_{1}$ and $Q_{2}$ , respectively, are connected to each other; then there is

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Answer:

Solution:

Decrease in energy of the system after connection is given by

$Δ U = \frac{1}{2} (\frac{C_{1} C_{2}}{C_{1} + C_{2}}) {(V_{1} - V_{2})}^{2}$

$Δ U = 0,$ If $V_{1} = V_{2}$

or $\frac{k q_{1}}{R_{1}} = \frac{k q_{2}}{R_{2}}$

or $q_{1} R_{2} = q_{2} R_{1}$

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

⏱ 2mℹ️ Source: PYQ_2020

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