Magnetic Materials & Curie Law

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)rise.
• (b)fall.
• (c)oscillate slowly.
• (d)remains as it is.

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)diamagnetic substance.
• (b)paramagnetic substance.
• (c)ferromagnetic substance.
• (d)paramagnetic as well as ferromagnetic substance.

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)
• (b)
• (c)
• (d)

Magnetic Materials & Curie Law · Domains

• (a)(A) is true but (R) is false
• (b)Both (A) and (R) are true and (R) is the correct explanation of (A)
• (c)(A) is false but (R) is true
• (d)Both (A) and (R) are true but (R) is not the correct explanation of (A)

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)negative and large.
• (b)negative and small.
• (c)positive and large.
• (d)positive and small.

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)D
• (b)B
• (c)A
• (d)C

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)both paramagnetic and ferromagnetic.
• (b)paramagnetic.
• (c)diamagnetic.
• (d)ferromagnetic.

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)$\mu < \mu_0$
• (b)$0 \le \mu_r < 1$
• (c)$-1 \le \chi < 0$
• (d)$1 < \mu_r < 1 + \varepsilon$

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)A-II, B-III, C-IV, D-I
• (b)A-II, B-I, C-III, D-IV
• (c)A-III, B-II, C-I, D-IV
• (d)A-IV, B-III, C-II, D-I

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)A, B, C Only
• (b)A, C Only
• (c)A, B, C, D
• (d)B, D Only

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)ferromagnetic domains are perfectly arranged.
• (b)ferromagnetic domains become random.
• (c)ferromagnetic domains are not influenced.
• (d)ferromagnetic material changes itself into diamagnetic material.

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)Statement I is incorrect but Statement II is true.
• (b)Statement I is correct but Statement II is false.
• (c)Both Statement I and Statement II are False.
• (d)Both Statement I and Statement II are true.

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)Both Statement I and Statement II are true
• (b)Statement I is correct but Statement II is false
• (c)Both Statement I and Statement II are False
• (d)Statement I is incorrect but Statement II is true.

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)Diamagnetic only.
• (b)Paramagnetic only.
• (c)Ferromagnetic only.
• (d)Diamagnetic and paramagnetic both.

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)$\mathrm{M} = \frac{\mathrm{T}}{\mathrm{CB}}$
• (b)$\mathrm{M} = \frac{\mathrm{CB}}{\mathrm{T}}$
• (c)$\mathrm{C} = \frac{\mathrm{MB}}{\mathrm{T}}$
• (d)$\mathrm{C} = \frac{\mathrm{T}^{2}}{\mathrm{MB}}$

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)
• (b)
• (c)
• (d)

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)Both Statement I and Statement II are true.
• (b)Both Statement I and Statement II are false.
• (c)Statement I is true but Statement II is false.
• (d)Statement I is false but Statement II is true.

Magnetic Materials & Curie Law · Domains

• (a)a macroscopic region with zero magnetization.
• (b)a macroscopic region with saturation magnetization.
• (c)a macroscopic region with randomly oriented magnetic dipoles.
• (d)a macroscopic region with consecutive magnetic dipoles oriented in opposite direction.

Magnetic Materials & Curie Law · Domains

• (a)may increase or decrease in size and change its orientation.
• (b)increase in size but no change in orientation.
• (c)decrease in size and changes orientation.
• (d)have no relation with external magnetic field.

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)(a), (c)
• (b)(a), (d)
• (c)(b), (d)
• (d)(b), (c)

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)Statement I is false but Statement II is true
• (b)Statement I is true but Statement II is false
• (c)Both Statement I and Statement II are false
• (d)Both Statement I and Statement II are true

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)large and negative
• (b)small and positive
• (c)large and positive
• (d)small and negative

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)parallel to magnetic field
• (b)perpendicular to magnetic field
• (c)inclined at an angle $45^\circ$ to magnetic field
• (d)inclined at an angle $120^\circ$ to magnetic field

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)$\vec{B}$
• (b)zero
• (c)much large than $\left|\vec{B}\right|$ and parallel to $\vec{B}$
• (d)much large than $\left|\vec{B}\right|$ but opposite to $\vec{B}$

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)0.0150
• (b)0.0075
• (c)0.0030
• (d)0.0045

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)4 A/m
• (b)1 A/m
• (c)0.75 A/m
• (d)2.25 A/m

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)large and positive
• (b)small and positive
• (c)small and negative
• (d)large and negative

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)3.726 $\times$ 10−4
• (b)2.672 $\times$ 10−4
• (c)3.672 $\times$ 10−4
• (d)3.267 $\times$ 10$-$4

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)The current source
• (b)The magnetic field
• (c)The lattice structure of the material of the rod
• (d)The induced electric field due to the changing magnetic field

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)ferromagnetic material only
• (b)paramagnetic and ferromagnetic materials
• (c)diamagnetic material only
• (d)paramagnetic material only

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)Bs = $-$ B
• (b)Bs = 0
• (c)Bs = B
• (d)Bs < B but Bs $\neq$ 0

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)A $\leftrightarrow$ D, B $\leftrightarrow$ P, C $\leftrightarrow$ F
• (b)A $\leftrightarrow$ F, B $\leftrightarrow$ D, C $\leftrightarrow$ P
• (c)A $\leftrightarrow$ P, B $\leftrightarrow$ F, C $\leftrightarrow$ D
• (d)A $\leftrightarrow$ F, B $\leftrightarrow$ P, C $\leftrightarrow$ D

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)B is of a paramagnetic material
• (b)C is of a diamagnetic material
• (c)D is of a ferromagnetic material
• (d)A is of a non-magnetic material

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)much greater than one
• (b)1
• (c)between zero and one
• (d)equal to zero

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)repelled by the north pole and attracted by the south pole
• (b)attracted by the north pole and repelled by the south pole
• (c)attracted by both the poles
• (d)repelled by both the poles

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)$\varepsilon_r = 0.5,\ \mu_r = 1.5$
• (b)$\varepsilon_r = 1.5,\ \mu_r = 0.5$
• (c)$\varepsilon_r = 0.5,\ \mu_r = 0.5$
• (d)$\varepsilon_r = 1.5,\ \mu_r = 1.5$

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)paramagnetic material becomes ferromagnetic material
• (b)ferromagnetic material becomes diamagnetic material
• (c)ferromagnetic material becomes paramagnetic material
• (d)paramagnetic material becomes diamagnetic material

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)anti ferromagnetism
• (b)no magnetic property
• (c)diamagnetism
• (d)paramagnetism.

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)attract $N_1$ and $N_2$ strongly but repel $N_3$
• (b)attract $N_1$ strongly, $N_2$ weakly and repel $N_3$ weakly
• (c)attract $N_1$ strongly, but repel $N_2$ and $N_3$ weakly
• (d)attract all three of them

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)paramagnetic material becomes ferromagnetic material
• (b)ferromagnetic material becomes diamagnetic material
• (c)ferromagnetic material becomes paramagnetic material
• (d)paramagnetic material becomes diamagnetic material

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)$\mu_d = 0$ and $\mu$p $\neq$ 0
• (b)$\mu$d $\neq$ 0 and $\mu$p = 0
• (c)$\mu$p = 0 and $\mu$f $\neq$ 0
• (d)$\mu$d $\neq$ 0 and $\mu$f $\neq$ 0.

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)a ferromagnetic material becomes paramagnetic
• (b)a paramagnetic material becomes diamagnetic
• (c)a ferromagnetic material becomes diamagnetic
• (d)a paramagnetic material becomes ferromagnetic

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)from stronger to the weaker parts of the field
• (b)from weaker to the stronger parts of the field
• (c)perpendicular to the field
• (d)in none of the above directions

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)$1/T$
• (b)$T$
• (c)$1/T$2
• (d)$T$2

Magnetic Materials & Curie Law · Curie law, χ–T graphs & Curie temperature

• (a)diamagnetism
• (b)paramagnetism
• (c)ferromagnetism
• (d)ferrite.

Magnetic Materials & Curie Law · Dia, para & ferromagnetic properties

• (a)attracted by a magnet
• (b)repelled by a magnet
• (c)repelled by north pole and attracted by south pole
• (d)attracted by north pole and repelled by south pole