Question
The free space inside a current carrying toroid is filled with a material of susceptibility 2 10^ -2 . The percentage increase in the value of magnetic field inside the toroid will be
BITSAT
Physics
Magnetic Properties of Matter
2023
BITSAT 2023 (Memory Based Paper 1)
BITSAT Physics Question (2023) — Solution
Options
- A. 2 \%
- B. 0.2 \%
- C. 0.1 \%
- D. 1 \%
Answer
A. 2 \%
Step-by-step solution
Given, Susceptibility of material, _m=2 10^ -2 Using _ r =1+ _ m =1+0.02=1.02 B _ final = _ r B _0 (here, B _0= initial magnetic field) \% increase in magnetic field = B _ final - B _0 ~B _0 100= _ r B _0- B _0 100 ~B _0 = ( +1)-1 100 1 =0.02 100=2 \%
Related: Physics — Magnetic Properties of Matter · All PYQ Banks