Question

A toroid of \(1000\) turns has average radius \[ \frac{\mu_0}{\pi}\ \text{metre}. \] If a current of \(1\,A\) is flowing through it, then the magnetic field intensity inside the coil of the toroid is

• A. \(500\,T\)
• B. \(100\,T\)
• C. \(750\,T\)
• D. \(1000\,T\)

Hint:

For a toroid, \[ B=\frac{\mu_0NI}{2\pi r}. \] The magnetic field is directly proportional to the number of turns and current, and inversely proportional to the mean radius.

Answer 1

The Correct Option is A