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JEE Physics · Hard

Electrostatics: Boundary Conditions MCQ

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Boundary ConditionsHardQuestion 31491

Question

At an interface between two dielectrics, which component of field is continuous?
  1. A
    Normal component of E
  2. B
    Tangential component of E
    Correct
  3. C
    Normal component of D
  4. D
    All components

Correct answer

Tangential component of E

Explanation

Boundary conditions: E_tangential is continuous (from ∮E·dl = 0). D_normal is continuous if no surface free charge. E_normal is discontinuous (D_n continuous + different ε_r).

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