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Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsGauss LawHard2 minPDF

PhysicsHardnumerical

A spherical region of radius 3 R have three different volume charge density $+ ρ, - 2 ρ$ and $+ 3 ρ$ as shown. Electric field at point A is n $[\frac{11 ρ R}{27 ϵ _{0}}]$ . Find value of n.

Answer:

4.00

Solution:

Apply Gauss law using superposition for the three concentric charged regions.

$E_{A} = \frac{11 ρR}{27 ϵ _{0}} n$

The enclosed-charge contributions give n = 4.

Stream:JEESubject:PhysicsTopic:ElectrostaticsSubtopic:Gauss Law

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