There is a ring of radius r having linear charge density λ and rotating with a uniform angular velocity ω. The magnetic field produced by this ring at its own centre would be

Options

(a) λω²/2-μ₀
(b) μ₀λ²ω/√2
(c) μ₀λω/2
(d) μ₀λ/2ω²

Correct Answer:

μ₀λω/2

Explanation:

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