Q.

Two point charges are kept at a certain distance from one another. The graph represents the variation of the potential along the straight line connecting the two charges. At what point is the electric field zero?

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a

3

b

1

c

4

d

2

answer is C.

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Detailed Solution

We know 

E=-Vr from the graph we can say that Vr=0 at point 3. So the electric field will be zero at point 3.

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