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Three charges of equal magnitude q is placed at the vertices of an equilateral triangle of side l.The force on charge Q placed at the centroid of the triangle is 
  • a)
  • b)
  • c)
  • d)
    zero
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Three charges of equal magnitude q is placed at the vertices of an equ...
 As shown in figured raw AD ⊥ BC.



Distance AO of the centroid O from A

∴ Force on Q at O due to charge q1 = q at A,

Similarly, force on O due to charge q2 = q at B
 along BO and force on Q due to charge q3 = q at c

Angle between forces F2 and F3 = 120°
By parallelogram law, resultant of  along OA
∴ Total force on Q = 
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Three charges of equal magnitude q is placed at the vertices of an equilateral triangle of side l.The force on charge Q placed at the centroid of the triangle isa)b)c)d)zeroCorrect answer is option 'D'. Can you explain this answer?
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