Q 12-05-040JEE MainJEE Main 2023 (11 Apr, Shift 1)Easy
The free space inside a current carrying toroid is filled with a material of susceptibility $2\times10^{-2}$. The percentage increase in the value of magnetic field inside the toroid will be
Answer: (C) $2\%$
$B=\mu_0(1+\chi)nI$: the field rises by a fraction $\chi=0.02$, i.e. $2\%$.
Solution by Sreeraj P, M.Sc Physics