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Question 20193
JEE Physics · Medium

Magnetism: Ampere's Circuital Law MCQ

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Ampere's Circuital LawMediumQuestion 20193

Question

Ampere's circuital law states that the line integral of B along a closed path equals:
  1. A
    μ₀ times total current enclosed
    Correct
  2. B
    ε₀ times total charge enclosed
  3. C
    Total flux through the surface
  4. D
    Zero always

Correct answer

μ₀ times total current enclosed

Explanation

∮ B·dl = μ₀I_enc. This is Ampere's law; the generalised form (Maxwell) adds the displacement current term μ₀ε₀ dΦE/dt.

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