Question

Magnetic field due to a current carrying toroidal at the inside of toroid is independent on

• A. number of turns of toroid
• B. current passes through it
• C. mean radius of toroid
• D. All of the above

Answer 1

The correct option is D All of the above

Magnetic field produced by toroid inside the core of toroid is given by

$B=\frac{{\mu }_{0}Ni}{2\pi r}$

But inside the toroid, $i=0$

$\therefore B=0$

So, $B$ does not depend upon any parameter for inside region of toriod.