A Which would best describe the force on an electron placed at point A? (a) (b) (c) (d) -
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we can obtain the direction of electric force either with the help of the figure given in the question or by finding the force by charges one by one.
method 1). We know that tangent at a point on electric field lines gives us the direction of the Electric field at that point. Thus if we draw the tangent at point A it will be a horizontal line as the point is at the top point of the curve. The direction of the Electric field line is toward the right. Thus Electric field at point A will be a horizontal line toward the right.
Now the direction of the electric force on the electron will be opposite to the direction of the electric field.
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