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- no force will act on particle of x = y
- F∝(x2−y2) if x > y
- the force will act along positive Z-axis if x > y
- the force will act along positive Z-axis if y > x

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Solution

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→F=→v×→B

→F=(xi+yj)×(yi+xj)

→F=x2k+y2(−k)

→F=x2k−y2k

If x=y,F=(x2−y2)k=0

F>0 if x>y. So the force acts in positive z- direction if x > y

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