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Question

Two charged spheres A and B charged with the charges of + 10 and +20 coulombs respectively and Separated by a distance of 80 cm. The electric field at a point on the line joining the centres of the two spheres will be zero at a distance from sphere A


A

20 cm

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B

33 cm

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C

55 cm

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D

60 cm

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Solution

The correct option is B

33 cm


For zero electric field at P, the electric fields due to spherical conductors A and B must be equal and opposite i.e.


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