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Question 31446
JEE Physics · Medium

Electrostatics: Relation E and V MCQ

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Relation E and VMediumQuestion 31446

Question

Relation between electric field and potential is:
  1. A
    E = V/r
  2. B
    E = −dV/dr (gradient)
    Correct
  3. C
    E = dV/dx
  4. D
    E = V × r

Correct answer

E = −dV/dr (gradient)

Explanation

E = −∇V. In one dimension: Ex = −dV/dx. Electric field points from high to low potential (negative gradient).

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