Nickel is ferromagnetic at room temperature. At a value of H field of 5 × 1 0 5 A / m , nickel saturates. The net magnetic field B is 1.25 T. What is the magnetisation vector I of nickel sample?

Ans (A) μ = μ 0 B − H = 4 π 1.25 × 1 0 7 − 5 × 1 0 5 = 5 × 1 0 5 A/m

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Nickel is ferromagnetic at room temperature. At a value of H field of $5 \times 1 0^{5} A / m$ , nickel saturates. The net magnetic field B is 1.25 T. What is the magnetisation vector $I$ of nickel sample?

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Answer:

Solution:

Ans (A)

$μ = \frac{B}{μ _{0}} - H$

$= \frac{1.25}{4 π} \times 1 0^{7} - 5 \times 1 0^{5} = 5 \times 1 0^{5}$ A/m

Stream:JEESubject:PhysicsTopic:MagnetismSubtopic:Magnetic properties of matter

⏱ 2mℹ️ Source: QB

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