A) Always along a line of force
B) Along a line of force, if its initial velocity is zero
C) Along a line of force, if it has some initial velocity in the direction of an acute angle with the line of force
D) None of the above
Correct Answer: B
Solution :
Because E points along the tangent to the lines of force. If initial velocity is zero, then due to the force, it always moves in the direction of E. Hence will always move on some lines of force.
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