Two small spheres each carrying a charge q are placed r metre apart. If one of the spheres is taken around the other one in a circular path, the work done will be equal to :
force between them × r
force between them × 2 πr
force between them / r πr
zero
A
force between them × r
B
force between them × 2 πr
C
zero
D
force between them / r πr
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Solution
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Potential energy between any two given particles =kq1q2r
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