Given that all spheres are at the same electrostatic potential V, we can express the charge Q in terms of V and r: Q = V (4πε₀r). Substitute this expression for Q into the formula for E.
Consider metallic spheres of different radii r, all at the same electrostatic potential. Then the magnitude E of the electric field just outside these spheres depends on r as :
Asked in UPSC Geoscientist 2024 · Topic: Electric Current (Definition of Electric Current and current density)
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