Question

The susceptibility of Al is $2 \times 10^{-5}$. The percent increase in the magnetic field when the space within a current carrying toroid is filled with Al is:

• A. $2 \times 10^{-2}$
• B. $2 \times 10^{-3}$
• C. $2 \times 10^{-4}$
• D. $2 \times 10^{-5}$

Hint:

Percent change in $B$ is simply susceptibility ($\chi$) multiplied by 100.

Answer 1

The Correct Option is B