Q.

Four point charges qA = 2μC , qB = 5μC, qC = 2μC and qD5μC are located at the corners of a square ABCD of side 10cm. What is the force on the charge of 1μc placed at the centre of the square.

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a

2.545×109N

b

12.72×109N

c

15.91×109N

d

Zero

answer is A.

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Detailed Solution

As equal and opposite forces acts, 
resultant force - zero

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