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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > There are three concentric thin spheres of radius a, b, c ( a> b> c ). The total surface charge densities on their surfaces are σ,−σ,σ respectively. The magnitude of the electric field at r (distance from centre) such that a> r> b is:

There are three concentric thin spheres of radius a, b, c ( a> b> c ). The total surface charge densities on their surfaces are σ,−σ,σ respectively. The magnitude of the electric field at r (distance from centre) such that a> r> b is:

−σ B c ( a> b> c ). The total surface charge densities on their surfaces are σ There are three concentric thin spheres of radius a σ respectively. The magnitude of the electric field at r (distance from centre) such that a> r> b is: