Answer:
The magnetic field at the center of a circular loop is [tex]3.14\times10^{-5}\ T[/tex].
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
[tex]B = \dfrac{I\mu_{0}}{2r}[/tex]
Where, I = current
r = radius
Put the value into the formula
[tex]B =\dfrac{2.0\times4\pi\times10^{-7}}{2\times4.0\times10^{-2}}[/tex]
[tex]B =0.00003141\ T[/tex]
[tex]B=3.14\times10^{-5}\ T[/tex]
Hence, The magnetic field at the center of a circular loop is [tex]3.14\times10^{-5}\ T[/tex].
