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JEE · NEET Previous Year Question

$The magnetic susceptibility of a material of a rod is 499. Permeability in vacuum is 4 π \times 1 0^{- 7} H / m . Absolute permeability of the material of the rod is:$

Topic: JEE PYQ

Answer: B. Full step-by-step solution below.

A $4π\times 1 0^{- 4} H/m$
B $2π\times 1 0^{- 4} H/m$
C $3π\times 1 0^{- 4} H/m$
D $π \times 1 0^{- 4} H / m$

Correct answer: B

Solution

(b) μ = μ_{0} (1 + x_{m}) = 4 π \times 1 0^{- 7} \times 500 = 2 π \times 1 0^{- 4} H / m

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