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Q.

Four charges of equal magnitude 2μC are kept at the four corners of a square of side 5cm. The force  experienced by any one of them

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a

27.3 N

b

5 N

c

15 N

d

10 N

answer is B.

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Detailed Solution

22+1214πεoq2a2=(2×1.414)+12×9×1092×10−625×10−22=3.8282×9×109×4×10−1225×10−4=27.5616N

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