Boundary Conditions MCQs

Practice Boundary Conditions MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1

Electromagnetic TheoryBoundary Conditions

At the boundary between two perfect dielectric media with no free surface charge, which component of electric flux density D is continuous?

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Correct Answer: A. Normal component

Explanation: The boundary condition is D1n-D2n=ρs. With no free surface charge, the normal components are equal.

Reference: Standard electromagnetic theory: boundary conditions

Question 2

Electromagnetic TheoryBoundary Conditions

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Correct Answer: A. Continuous

Explanation: Electrostatic boundary conditions require E1t=E2t.

Reference: Standard electromagnetic theory: boundary conditions

Question 3

Electromagnetic TheoryBoundary Conditions

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Correct Answer: A. Zero

Explanation: A nonzero tangential electric field would drive free charges, so electrostatic equilibrium requires Et=0.

Reference: Standard electromagnetic theory: boundary conditions