For a sample of iron, the following relation holds- μ = 0 . 4 H + 12 × 10 - 4 H / m Find the value of H which produces a magnetic field of 1 T .

Given: μ = 0 . 4 H + 12 × 10 - 4 H / m We know that, B = μ H B = 0 . 4 H + 12 × 10 - 4 . H 1 = 0 . 4 + 12 × 10 - 4 H Also, H = 0 . 6 12 × 10 - 4 = 500 H / m

State Gauss ' s law of magnetism. Explain its significance

The net magnetic flux out of any closed surface is zero, according to the Gauss law of magnetism. That is, the number of magnetic field lines entering and leaving any closed surface is equal. It essentially states that magnetic monopoles do not exist. Every closed surface has magnetic flux in the inward direction to the south pole and equal flux in the outward direction to the north pole for a dipole. Since magnetic flux is not zero in the case of mono poles, it is a fact that mono poles do not exist.

State Gauss’ law for magnetism. Explain its significance.

Gauss law for magnetism says that if a closed surface is imagined in a magnetic field, the number of lines of force emerging from the surface must be equal to the number entering it. That is, the net magnetic flux out of any closed surface is zero. Gauss law signifies that magnetic mono poles does not exist.Every closed surface has magnetic flux in the inward direction to the south pole and equal flux in the outward direction to the north pole for a dipole. Since magnetic flux is not zero in the case of mono poles, it is a fact that mono poles do not exist.

Magnetic susceptibility for a paramagnetic and diamagnetic material is respectively

Small, positive and small, negative

small, positive and small, positive

Large, positive and small, negative

Large, negative and large, positive

The magnetic susceptibility is negative for:

paramagnetic and ferromagnetic materials

E M B I B E

Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 5 - Magnetism and Matter>Exercise>Q 15

EASY

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IMPORTANT

Earn 100

Relative permeability of iron is $5000$ , then its magnetic susceptibility will be

50% studentsanswered this correctly

Important Questions on Magnetism and Matter

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IMPORTANT

Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 5 - Magnetism and Matter>Exercise>Q 16

An iron specimen has relative permeability of

600

when placed in uniform magnetic field of intensity

110 A m^{- 1}

. Then the magnetic flux density inside is.......

Tesla .

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IMPORTANT

Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 5 - Magnetism and Matter>Exercise>Q 17

μ_{0}

is permeability of vacuum,

χ_{m}

is susceptibility then permeability of material is

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IMPORTANT

Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 5 - Magnetism and Matter>Exercise>Q 18

There are

2.0 \times 10^{24}

molecular dipoles in a paramagnetic salt. Each has dipole moment

1.5 \times 10^{- 23} A m^{2}

. Find maximum (saturation) magnetization in the specimen.

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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 5 - Magnetism and Matter>Exercise>Q 19

A magnetic material has magnetic susceptibility as

- 0.085

. What type of material it is?

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IMPORTANT

Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 5 - Magnetism and Matter>Exercise>Q 20

Write the relation between magnetic permeability and magnetic susceptibility for a medium.

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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 5 - Magnetism and Matter>Exercise>Q 21

An iron rod of cross section $1 {cm}^{2}$ is placed in magnetic field of $200 oersted$ . It produces in magnetic field of $3000 G$ . Find magnetic permeability and magnetic susceptibility of the material.