A large metal sheet carries an electric current along its surface. Current per unit length is λ. Magnetic field near the metal sheet is:
Correct answer: A. Option A
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
Applying Ampere's law∮ B · dℓ = μ₀ (λ ℓ)2 B ℓ = μ₀ λ ℓB = (1/2) μ₀ λ
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About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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