Question

a wire carries 15 A. You form it into a singleturn circular loop with magnetic field 80 µT at the loop center. What is the loop radius?

Answer 1

use the formula B(at the center)= (4 pi * 10^(-7) ) * I (current) / ( 2 radius)
and you will get the answer that will be 6.

Answer 2

Radius of the loop, r = 0.12 m

Step-by-step explanation:

It is given that,

Current flowing in the wire, I = 15 A

Magnetic field at the center of the loop, B = 80 μT = 80 × 10⁻⁶ T

The magnetic field at the center of the circular loop is given by :

`B=(\mu_0I)/(2r)`

R is the radius of loop

`r=(\mu_oI)/(2B)`

`r=(4* 3.14* 10^(-7)* 15)/(2* 80* 10^(-6))`

r = 0.12 m

So, the radius of the loop is 0.12 m

Hence, this is the required solution.