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Four point charges qA =2 mu C , qB =5 m...

Four point charges `q_A =2 mu C , q_B =5 muC , q_C =2 mu C and q_D =5 mu C ` are located at the corners of a square ABCD of side 10 cm. What is the force on a charge of `1mu C ` placed at the centre of the square ?
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Text Solution

Verified by Experts

As shown in the charge distribution is symetrical and `AO=BO=CO=DO=(10)/(sqrt(2)) cm , ` hence `oversetto (F_(OB) ) and oversetto (F_(OD)) ` balance each other, Similarlly , ` oversetto (F_(OA) ) and oversetto (F_(OC)) ` balance each other.
` therefore ` Net force F on ` 1 mu C ` charges placed at the centre point O of the square `ABCD= 0. `
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