MHT CET 2025 Physics question
Three concentric charged metallic spherical sheets A, B and C have radii a, b, c potentials , , and charge densities , and respectively. The value of potential is ( = permittivity of free space)
Answer: (C)
Solution
Take (A innermost). The charges are , , . The potential at the innermost shell is the sum of the potentials due to all three shells (for a point on or inside a shell, the shell's potential is with its own radius):
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