The magnetic field at the center of a circular loop of radius $R$ carrying current $I$ is:

1. A $\mu_0 I/(2R)$ Correct answer
2. B $\mu_0 I/(4\pi R)$
3. C $\mu_0 I/R$
4. D $\mu_0 I/(2\pi R)$

Solution

$B = \mu_0 I/(2R)$ at the center of a circular loop.

About this question

Subject: Physics · Chapter: Magnetic Effects of Current · Topic: Biot-Savart Law

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