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                                    Two concentric conducting thin spherical shells A and B having radii rA and rB(rB>rA) are charged with charges QA and −QB (|QB|>|QA|). The electric field along a line, (passing through the centre) varies with distance x from the centre as | 
                            
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Answer»  Two concentric conducting thin spherical shells A and B having radii rA and rB(rB>rA) are charged with charges QA and −QB  (|QB|>|QA|). The electric field along a line, (passing through the centre) varies with distance x from the centre as  | 
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