The electric field at a distance r from the centre in the space between two concentric metallic spherical shells of radii r1 and r2 carrying charge Q1 and Q2 is (r1<r<r2) :
A
Q1+Q24πε0(r1+r2)2
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B
Q1+Q24πε0r2
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C
Q14πε0r2
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D
Q24πε0r2
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Solution
The correct option is CQ14πε0r2
Consider a spherical surface with radius r where r1<r<r2