Magnetic field at the center of a circul

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Target Exam

CUET

Subject

Physics

Chapter

Moving Charges and Magnetism

Question:

Magnetic field at the center of a circular current-carrying conductor/coil is given by which of the following?

Options:

μ_οI/4r

μ_οI/4πr

μ_οI/2r

μ_οI/2πr

Correct Answer:

μ_οI/2r

Explanation:

Using Biot-Savart's Law, B = μ_οI/2r