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Electric charges of 1μC,1μC and 2μC are placed in air at the corners of A,B and C respectively of an equilateral triangle ABC having the length of the side 10cm. The resultant forces at C is : <br> (14πε0=9×109Nm2C2)


( A ) 3.6N
( B ) 2.7N
( C ) 1.83N
( D ) 0.9N

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