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A charged particle is placed at the centre of two thin concentric spherical charged shells, made of non-conducting material. Figure A shows cross-section of the arrangement. Figure B gives the net flux phi through a Gaussian sphere centered on the particle, as a function of the radius r of the sphere. (a) Find charge on the central particle and shell A. (b) In which range of the finite values of r, is the electric field zero? |
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Answer» (B). No where |
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