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JEE Main202125 Jul 2021Morning ShiftPhysicsMagnetic Properties of MatterActual

The value of aluminium susceptibility is 2 . 2 × 10 - 5 . The percentage increase in the magnetic field if space within a current carrying toroid is filled with aluminium is x 10 4 . Then the value of x is

Correct answer

0

Step-by-step solution

B = μ H + I B = μ H 1 + I H B = B 0 ( 1 + x ) B - B 0 = B 0 x B - B 0   B 0 = x B - B 0   B 0 × 100 = 100 x = 2 . 2 × 10 - 3 = 22 10 4

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