Two concentric spherical surfaces of radii and are found to be equipotential surfaces…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Two concentric spherical surfaces of radii 0.10 m0.10\,\text{m} and 0.12 m0.12\,\text{m} are found to be equipotential surfaces having potentials 120 V120\,\text{V} and 100 V100\,\text{V} respectively. Assuming the electric field is radial and nearly uniform in the region between the two surfaces, calculate the magnitude of the electric field in that region. (a) 200 V m−1200\,\text{V m}^{-1} (b) 1000 V m−11000\,\text{V m}^{-1} (c) 500 V m−1500\,\text{V m}^{-1} (d) 1200 V m−11200\,\text{V m}^{-1}

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