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EAMCET Engineering 2004 Solved Paper

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Question : 30

Total: 160

Three point charges 1C,−2C and −2C are placed at the vertices of an equilateral triangle of side 1 metre. The work done by an external force to increase the separation of the charges to 2 metre in joule is ( ε0= permittivity of air)

‌
1
4πε0
‌
1
8πε0
‌
1
16πε0
zero

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