Physics (AS & A Level) · May / June 2016 · Paper 43 · Question 6
9702
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A solid metal sphere of radius R is isolated in space. The sphere is positively charged so that the electric potential at its surface is VS. The electric field strength at the surface is ES.
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6(a)[3]
sketch: from x = 0 to x = R, potential is constant at VS smooth curve through (R, VS) and (2R, 0.5VS) smooth curve continues to (3R, 0.33VS) [3]
6(b)[3]
sketch: from x = 0 to x = R, field strength is zero smooth curve through (R, E) and (2R, 0.25E) smooth curve continues to (3R, 0.11E) [3]
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