Question

What is the magnetic field at the center of a circular loop

ofwire of radius 4.0cm when a current of 2.0A flows in
thewire?

Answer 1

The magnetic field at the center of a circular loop is
`3.14*10^(-5)\ T`.

Step-by-step 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 = (I\mu_(0))/(2r)`

Where, I = current

r = radius

Put the value into the formula

`B =(2.0*4\pi*10^(-7))/(2*4.0*10^(-2))`

`B =0.00003141\ T`

`B=3.14*10^(-5)\ T`

Hence, The magnetic field at the center of a circular loop is
`3.14*10^(-5)\ T`.