Explanation:
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Answer:
The magnetic field at the center of a circular loop is
.
Explanation:
Given that,
Radius = 4.0 cm
Current = 2.0 A
We need to calculate the magnetic field at the center of a circular loop
Using formula of magnetic field
![B = \dfrac{I\mu_{0}}{2r}](https://tex.z-dn.net/?f=B%20%3D%20%5Cdfrac%7BI%5Cmu_%7B0%7D%7D%7B2r%7D)
Where, I = current
r = radius
Put the value into the formula
![B =\dfrac{2.0\times4\pi\times10^{-7}}{2\times4.0\times10^{-2}}](https://tex.z-dn.net/?f=B%20%3D%5Cdfrac%7B2.0%5Ctimes4%5Cpi%5Ctimes10%5E%7B-7%7D%7D%7B2%5Ctimes4.0%5Ctimes10%5E%7B-2%7D%7D)
![B =0.00003141\ T](https://tex.z-dn.net/?f=B%20%3D0.00003141%5C%20T)
![B=3.14\times10^{-5}\ T](https://tex.z-dn.net/?f=B%3D3.14%5Ctimes10%5E%7B-5%7D%5C%20T)
Hence, The magnetic field at the center of a circular loop is
.
C metal. most metals are a conductor which an electric current is attracted to.