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Electricity and Magnetism

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Moderate

Magnetic Field Above the Center of a Circle of Current

EANDM-HADYS0

Figure 1 depicts a field point a distance $h = 1.86 \text{ cm}$ above the center of a circle of current of radius $R = 1.53 \text{ cm}$. The current running through the circular wire is $I = 3.24 \text{ A}$.

Figure 1. Timothy Black. Created for Albert.io. Copyright 2016. All rights reserved.

What is the magnitude of the magnetic field at the field point $P$?

A

$B =53.7 \ \mu\text{T}$

B

$B =0.341 \ \mu\text{T}$

C

$B =41.5 \ \mu\text{T}$

D

$B =34.1 \ \mu\text{T}$