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Home  >>  AIMS  >>  Class12  >>  Physics  >>  Electric Charges and Fields
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A charged metallic sphere A is suspended by a nylon thread. Another charged metallic sphere B carried by an insulating handle is brought close to A such that the distance between their centres is 10 cm. The resulting repulsion of A is noted (for example, by shinning a beam of light and measuring the deflection of its shadow on a calibrated screen). Spheres A and B are touched by uncharged spheres C and D respectively. C and D are then removed, and B is brought closer to A to a distance of 5.0 cm between their centres. What is the expected repulsion of A on the basis of Coulomb's law? Spheres A and C and spheres B and D have identical sizes. Ignore the sizes of A and B in comparison to the separation between their centres.

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T electrostatic force of repulsion is unchanged.
answered Jun 5, 2014 by meena.p

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