A uniformly charged circular arc AB of radius R is shown in the figure. It cover

Question

A uniformly charged circular arc AB of radius R is shown in the figure. It covers a quarter of a circle and it is located in the second quadrant. The total charge on the arc is Q>0. The Direction of the electric field E due to the charge distribution at the origin is..

1. Along the positive X-axis

2.in quadrant 2

3. In quadrant 3

4. in quadrant 1

5. along the positive y-axis

6. along the negative y-axis

7. along the negative x-axis

8. in quadrant 4

A uniformly charged circular arc AB of radius R is shown in the figure. It covers a quarter of a circle and it is located in the second quadrant. The total charge on the arc is Q > 0. The Direction of the electric field E due to the charge distribution at the origin is.. 1. Along the positive X-axis 2.in quadrant 2 3. In quadrant 3 4. in quadrant 1 5. along the positive y-axis 6. along the negative y-axis 7. along the negative x-axis 8. in quadrant 4

Explanation / Answer

answer: 8. in quadrant 4

draw a line y = -x

for any position near A, we can find a position near B that has reflection symmetry about line y =-x, the net electric field due to these two chages is point to quadrant 4.

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