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Consider a region where electric field is zero, Is it necessary that electric potential is also zero where electric field strength is zero? Give any two examples to illustrate your answer.

Asked by Topperlearning User 22nd April 2015, 2:09 PM
Answered by Expert

We know that the electric field is equal to the negative of potential gradient begin mathsize 11px style straight E space equals space minus dV over dr end style. This implies that even if the electric field at a point is zero, the potential may have some non-zero constant value at that point.

  1. Electric field inside a charged conducting sphere is zero but potential at any point inside is the same as that on the surface of the sphere. 
  2. Electric field at mid point of line joining two equal and similar charges is zero, but the potential at this point is twice of that due to a single charge.
Answered by Expert 22nd April 2015, 4:09 PM
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