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Two point charges A and B of value +5xx1...

Two point charges A and B of value `+5xx10^(-9)C` and `+3xx10^(-9)C` respectively are kept 6 cm apart in air. Calculate the work done when charge B is moved by one cm towards charge A.

Text Solution

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`:.` Work done `=Fxxs=(1)/(4piepsi_(0))(q_(1)*q_(2))/(r^(2))xxs`
`=(9xx10^(9)xx5xx10^(-9)xx3xx10^(-9)xx1xx10^(-2))/((6xx10^(-2))^(2))`
`=3.75xx10^(-7)J`
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