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Question

An electric line of force in the xy−plane is given by equation x2+y2=1. A particle with unit positive charge, initially at rest at the point x=1,y=0 in the xy−plane.

A
Not move at all
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B
Will move along straight line
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C
Will move along the circular line of force
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D
Information is insufficient to draw any conclusion
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Solution

The correct option is C Will move along the circular line of force
Charge will move along the circular line of force because x2+y2=1 is the equation of circle in xyplane.

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