Potential Energy of a System of Multiple Point Charges
Three charges...
Question
Three charges +q,+q and +q are placed at the corners of an equilateral triangle of side 'a'. The resultant electric force on a charge +q placed at the centre of the triangle is :
A
14πϵ0.3Q2a2
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B
14πϵ0.3Q2a
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C
14πϵ0.3√3Q2a2
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D
Zero
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Solution
The correct option is DZero The force acting on the charge at the center are equal in magnitude and act at 120∘ to each other ∴ by vector addition we get Felectrostatic=0