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प्रश्न
The work done in carrying a charge Q once round a circle of radius r with charge q at the centre of the circle is ______
विकल्प
`1/(4piε_0) . Q/r`
`(Q.q)/(4piε_0r)`
Zero
`(Q.q)/(2r)`
उत्तर
The work done in carrying a charge Q once round a circle of radius r with charge q at the centre of the circle is Zero.
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