Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 135

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Earn 100

Assertion: Susceptibility is defined as the ratio of intensity of magnetisation $I$ to magnetic intensity $H$ .

Reason: Greater the value of susceptibility, smaller the value of intensity of magnetisation $I$ .

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Important Questions on Magnetism

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 136

A solenoid has a core of a material having relative permeability

500

. The windings of the solenoid are insulated from the core and carry a current of

1 A

. If the number of turns is

500 per metre

, the magnetization is

MEDIUM

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 137

The space within a current-carrying toroid is filled with tungsten of susceptibility

4.6 \times 10^{- 5}

. The percentage increase in the magnetic field is

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 139

The magnetic susceptibility of paramagnetic substance is

3 \times 10^{- 4}

. It is placed in the magnetising field of

4 \times 10^{4} A m^{- 1}

. The intensity of magnetisation will be

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 140

The most appropriate magnetization $M$ versus magnetising field $H$ curve for a paramagnetic substance is

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 141

The ratio of intensity of magnetization and magnetizing field is called

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 143

On placing a piece of ferromagnetic material of cross-sectional area

1 {cm}^{2}

in a magnetic field of

200 oersted

, a flux density of

3000 G

is produced in it. The values of relative permeability and magnetic susceptibility of the material will, respectively, be:

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 144

A permanent magnet in the shape of a thin cylinder of length

10 cm

has magnetization

(M) = 10^{6} A m^{- 1}

. Its magnetization current

I_{M}

is

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 145

The magnetic susceptibility of a paramagnetic material at

- 73 ° C

is

0.0075

, it's value at

- 173 ° C

will be: