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Magnetism: Toroid Field MCQ

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Toroid FieldMediumQuestion 20172

Question

Magnetic field in the empty space inside the core of a toroid is:
  1. A
    μ₀nI
  2. B
    μ₀NI/2πr
  3. C
    Zero
    Correct
  4. D
    Maximum

Correct answer

Zero

Explanation

By Ampere's law, the net enclosed current for a path inside the hole of a toroid is zero → B = 0 in the hollow core region.

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