The magnetic field at the centre of a toroid is 2.2-mt. if the toroid carries a current of 9.6 a and has 6.000 turns, what is the radius of the toroid?

Radius, r = 0.00523 meters

Explanation:

It is given that,

Magnetic field,

Current in the toroid, I = 9.6 A

Number of turns, N = 6

We need to find the radius of the toroid. The magnetic field at the center of the toroid is given by :                  

r = 0.00523 m

or

So, the radius of the toroid is 0.00523 meters. Hence, this is the required solution.

i think the answer is a, hope this : )