The magnetic field which destroys the superconductivity is called a) Diamagnetic field b) Ferromagnetic field c) Ferrimagnetic field d) Critical field

The magnetic field which destroys the superconductivity is called
a) Diamagnetic field
b) Ferromagnetic field
c) Ferrimagnetic field
d) Critical field
by

1 Answer

Answer :

d) Critical field
by

Related questions

In which materials the magnetic anisotropy is followed? a) Diamagnetic b) Paramagnetic c) Ferromagnetic d) Ferromagnetic

Description : In which materials the magnetic anisotropy is followed? a) Diamagnetic b) Paramagnetic c) Ferromagnetic d) Ferromagnetic

Last Answer : c) Ferromagnetic

Ferrites are (A) ferromagnetic material. (B) ferrimagnetic materials. (C) anti ferromagnetic material. (D) diamagnetic materials.

Description : Ferrites are (A) ferromagnetic material. (B) ferrimagnetic materials. (C) anti ferromagnetic material. (D) diamagnetic materials.

Last Answer : (A) ferromagnetic material.

Very small and positive susceptibility is found in a) Ferromagnetic b) Diamagnetic c) Paramagnetic d) Antiferromagnetic

Description : Very small and positive susceptibility is found in a) Ferromagnetic b) Diamagnetic c) Paramagnetic d) Antiferromagnetic

Last Answer : c) Paramagnetic

The materials having very small susceptibility at all temperatures are a) Antiferromagnetic b) Diamagnetic c) Ferromagnetic d) Paramagnetic

Description : The materials having very small susceptibility at all temperatures are a) Antiferromagnetic b) Diamagnetic c) Ferromagnetic d) Paramagnetic

Last Answer : a) Antiferromagnetic

A material which is slightly repelled by a magnetic field is known as (a) ferromagnetic material (b) diamagnetic material (c) paramagnetic material (d) conducting material

Description : A material which is slightly repelled by a magnetic field is known as (a) ferromagnetic material (b) diamagnetic material (c) paramagnetic material (d) conducting material

Last Answer : (b) diamagnetic material

Magnets attract magnetic substances are iron, nickel, cobalt, etc. They can also repel - (1) paramagnetic substances (2) ferromagnetic substances (3) diamagnetic substances (4) non-magnetic substances

Description : Magnets attract magnetic substances are iron, nickel, cobalt, etc. They can also repel - (1) paramagnetic substances (2) ferromagnetic substances (3) diamagnetic substances (4) non-magnetic substances

Last Answer : (3) diamagnetic substances Explanation: Those materials which when placed in a magnetic field become weakly magnetized in a direction opposite to that of the applied field, are called as diamagnetic materials ... : bismuth, antimony, copper, gold, quartz, mercury, water, alcohol, air, hydrogen etc.

A magnetic material becomes __________ above the Curie temperature. (A) Ferromagnetic (B) Diamagnetic (C) Paramagnetic (D) None of these

Description : A magnetic material becomes __________ above the Curie temperature. (A) Ferromagnetic (B) Diamagnetic (C) Paramagnetic (D) None of these

Last Answer : (C) Paramagnetic

Iron is what type of magnetic material? Is it: w) diamagnetic x) paramagnetic y) ferromagnetic z) non-magnetic

Description : Iron is what type of magnetic material? Is it: w) diamagnetic x) paramagnetic y) ferromagnetic z) non-magnetic

Last Answer : ANSWER: Y -- FERROMAGNETIC 

(a) What happens when a Ferromagnetic or Ferrimagnetic solid is heated ? (b) The ions of MgO and NaF all have the same number of electrons and intermolecular distance are about the same (235 & 215 pm). Why are the melting points are so different (2642 °C & 992 °C ?

Description : (a) What happens when a Ferromagnetic or Ferrimagnetic solid is heated ?  (b) The ions of MgO and NaF all have the same number of electrons and intermolecular distance are about the same (235 & 215 pm). Why are the melting points are so different (2642 °C & 992 °C ?

Last Answer : (a) It changes into paramagnetic at hight temperature due to randomization of spins.  (b) The ions in MgO carry two unit charges. In NaCl only one unit charge. Hence electrostatic forces of attraction in MgO are stronger.

Define ferromagnetic and ferrimagnetic materials.

Description : Define ferromagnetic and ferrimagnetic materials.

Last Answer : Ferromagnetic materials: The materials which possess magnetism in the absence of applied magnetic field is known as ferromagnetic materials. Example: iron, nickel, cobalt Ferrimagnetic ... a spontaneous magnetization. Example: Magnetite, Ferrous ferrite, Nickel ferrite, Manganese ferrite.

In ferromagnetic, anti -ferromagnetic and ferrimagnetic materials, the atomic thermal motions counteract...

Description : In ferromagnetic, anti -ferromagnetic and ferrimagnetic materials, the atomic thermal motions counteract the coupling forces between the adjacent atomic dipole moments, thereby causing (a) Some dipole misalignment ... on dipole alignment (d) Atoms tend to de -randomize the direction of moments

Last Answer : In ferromagnetic, anti -ferromagnetic and ferrimagnetic materials, the atomic thermal motions counteract the coupling forces between the adjacent atomic dipole moments, thereby causing Some dipole misalignment regardless of whether an external field is present

Which of the following materials is ferrimagnetic? a) Fe b) Sn c) Fe 2 O 3 d) FeCl

Description : Which of the following materials is ferrimagnetic? a) Fe b) Sn c) Fe 2 O 3 d) FeCl

Last Answer : c) Fe 2 O 3

Nickel is a __________ material. (A) Ferromagnetic (B) Diamagnetic (C) Paramagnetic (D) None of these

Description : Nickel is a __________ material. (A) Ferromagnetic (B) Diamagnetic (C) Paramagnetic (D) None of these

Last Answer : (A) Ferromagnetic

Quartz is a __________ material. (A) Diamagnetic (B) Ferromagnetic (C) Ferroelectric (D) Piezoelectric

Description : Quartz is a __________ material. (A) Diamagnetic (B) Ferromagnetic (C) Ferroelectric (D) Piezoelectric

Last Answer : Option D

The relative permeability is less than unity is case of (a) ferromagnetic materials (b) ferrites (c) non-ferrous materials (d) diamagnetic materials

Description : The relative permeability is less than unity is case of (a) ferromagnetic materials (b) ferrites (c) non-ferrous materials (d) diamagnetic materials

Last Answer : (d) diamagnetic materials

Substances which have permeability less than the permeability of free space are known as (a) ferromagnetic (b) paramagnetic (c) diamagnetic (d) bipolar

Description : Substances which have permeability less than the permeability of free space are known as (a) ferromagnetic (b) paramagnetic (c) diamagnetic (d) bipolar

Last Answer : (c) diamagnetic

Ferrites are materials. (a) paramagnetic (b) diamagnetic (c) ferromagnetic (d) none of the above

Description : Ferrites are materials. (a) paramagnetic (b) diamagnetic (c) ferromagnetic (d) none of the above

Last Answer : (c) ferromagnetic

The coating on the plastic tape you use in your cassette players is w) diamagnetic x) paramagnetic y) ferromagnetic z) a permanent magnet

Description : The coating on the plastic tape you use in your cassette players is w) diamagnetic x) paramagnetic y) ferromagnetic z) a permanent magnet

Last Answer : ANSWER: Y -- FERROMAGNETIC

In ferromagnetic materials the susceptibility is infinity. State True/False a) True b) False

Description : In ferromagnetic materials the susceptibility is infinity. State True/False a) True b) False

Last Answer : a) True

The critical temperature above which the ferromagnetic materials loose their magnetic property is known as (A) hysterisis. (B) Curie point. (C) transition temperature. (D) standard temperature.

Description : The critical temperature above which the ferromagnetic materials loose their magnetic property is known as (A) hysterisis. (B) Curie point. (C) transition temperature. (D) standard temperature.

Last Answer : (B) Curie point

Diamagnetic materials (A) Are magnetised by eddy currents only (B) Are non-magnetic and cannot be magnetised (C) Are magnetised in direction opposite to the magnetic field (D) Can be magnetised in one direction only

Description : Diamagnetic materials (A) Are magnetised by eddy currents only (B) Are non-magnetic and cannot be magnetised (C) Are magnetised in direction opposite to the magnetic field (D) Can be magnetised in one direction only

Last Answer : (C) Are magnetised in direction opposite to the magnetic field

In a ferromagnetic material the state of flux density is as follows when external magnetic field is applied to it. (A) Increased (B) Decreased (C) Remains unchanged (D) Becomes zero

Description : In a ferromagnetic material the state of flux density is as follows when external magnetic field is applied to it. (A) Increased (B) Decreased (C) Remains unchanged (D) Becomes zero

Last Answer : (C) Remains unchanged

The power in a electromagnetic wave with electric field and magnetic field intensities 12 and 8 respectively is a) 96 b) 12 c) 8 d) 48

Description : The power in a electromagnetic wave with electric field and magnetic field intensities 12 and 8 respectively is a) 96 b) 12 c) 8 d) 48

Last Answer : d) 48

The electric and magnetic field components in the electromagnetic wave propagation are in phase. State True/False. a) True b) False

Description : The electric and magnetic field components in the electromagnetic wave propagation are in phase. State True/False. a) True b) False

Last Answer : a) True

In perfect conductors, the phase shift between the electric field and magnetic field will be a) 0 b) 30 c) 45 d) 90

Description : In perfect conductors, the phase shift between the electric field and magnetic field will be a) 0 b) 30 c) 45 d) 90

Last Answer : c) 45

In lossy dielectric, the phase difference between the electric field E and the magnetic field H is a) 90 b) 60 c) 45 d) 0

Description : In lossy dielectric, the phase difference between the electric field E and the magnetic field H is a) 90 b) 60 c) 45 d) 0

Last Answer : d) 0

The magnitude of the conduction current density for a magnetic field intensity of a vector yi + zj + xk will be a) 1.414 b) 1.732 c) -1.414 d) -1.732

Description : The magnitude of the conduction current density for a magnetic field intensity of a vector yi + zj + xk will be a) 1.414 b) 1.732 c) -1.414 d) -1.732

Last Answer : b) 1.732

The line integral of the electric field intensity is a) Mmf b) Emf c) Electric potential d) Magnetic potential

Description : The line integral of the electric field intensity is a) Mmf b) Emf c) Electric potential d) Magnetic potential

Last Answer : b) Emf

The reason for non existence of magnetic monopoles is a) The magnetic field cannot be split b) Due to permeability c) Due to magnetization d) Due to magnetostriction

Description : The reason for non existence of magnetic monopoles is a) The magnetic field cannot be split b) Due to permeability c) Due to magnetization d) Due to magnetostriction

Last Answer : a) The magnetic field cannot be split

The Gauss law for magnetic field is valid in a) Air b) Conductor c) Dielectric d) All cases

Description : The Gauss law for magnetic field is valid in a) Air b) Conductor c) Dielectric d) All cases

Last Answer : d) All cases

Which quantity is solenoidal in the electromagnetic theory? a) Electric field intensity b) Electric flux density c) Magnetic field intensity d) Magnetic flux density

Description : Which quantity is solenoidal in the electromagnetic theory? a) Electric field intensity b) Electric flux density c) Magnetic field intensit d) Magnetic flux density

Last Answer : d) Magnetic flux density

The total current density is given as 0.5i + j – 1.5k units. Find the curl of the magnetic field intensity. a) 0.5i – 0.5j + 0.5k b) 0.5i + j -1.5k c) i – j + k d) i + j – k

Description : The total current density is given as 0.5i + j – 1.5k units. Find the curl of the magnetic field intensity. a) 0.5i – 0.5j + 0.5k b) 0.5i + j -1.5k c) i – j + k d) i + j – k

Last Answer : b) 0.5i + j -1.5k

Find the electric field applied on a system with electrons having a velocity 5m/s subjected to a magnetic flux of 3.6 units. a) 15 b) 18 c) 1.38 d) 0.72

Description : Find the electric field applied on a system with electrons having a velocity 5m/s subjected to a magnetic flux of 3.6 units. a) 15 b) 18 c) 1.38 d) 0.72

Last Answer : b) 18

Find the magnetization of the material with susceptibility of 6 units and magnetic field intensity of 13 units. a) 2.16 b) 6.2 c) 78 d) 1.3

Description : Find the magnetization of the material with susceptibility of 6 units and magnetic field intensity of 13 units. a) 2.16 b) 6.2 c) 78 d) 1.3

Last Answer : c) 78

The line integral of the magnetic field intensity is the a) Current density b) Current c) Magnetic flux density d) Magnetic moment

Description : The line integral of the magnetic field intensity is the a) Current density b) Current c) Magnetic flux density d) Magnetic moment

Last Answer : b) Current

The normal component of magnetic field intensity at the boundary of separation of the medium will be a) Same b) Different c) Negative d) Inverse

Description : The normal component of magnetic field intensity at the boundary of separation of the medium will be a) Same b) Different c) Negative d) Inverse

Last Answer : a) Same

The tangential component of the magnetic field intensity is continuous at the boundary of separation of two media. State True/False. a) True b) False

Description : The tangential component of the magnetic field intensity is continuous at the boundary of separation of two media. State True/False. a) True b) False

Last Answer : a) True

Which of the following is true regarding magnetic lines of force? a) Real b) Imaginary c) Does not exist d) Parallel to field

Description : Which of the following is true regarding magnetic lines of force? a) Real b) Imaginary c) Does not exist d) Parallel to field

Last Answer : b) Imaginary

Find the magnetization of the field which has a magnetic moment 16 units in a volume of 1.2 units. a) 16.67 b) 13.33 c) 15.56 d) 18.87

Description : Find the magnetization of the field which has a magnetic moment 16 units in a volume of 1.2 units. a) 16.67 b) 13.33 c) 15.56 d) 18.87

Last Answer : b) 13.33

Calculate the magnetic moment when a field of B= 51 units is subjected to a torque of 20 units. a) 0.39 b) 4.2 c) 2.55 d) 3.21

Description : Calculate the magnetic moment when a field of B= 51 units is subjected to a torque of 20 units. a) 0.39 b) 4.2 c) 2.55 d) 3.21

Last Answer : a) 0.39

The magnetic force impacts the energy of the field. State True/false. a) True b) False

Description : The magnetic force impacts the energy of the field. State True/false. a) True b) False

Last Answer : a) True

Find the Lorentz force of a charge 2.5C having an electric field of 5 units and magnetic field of 7.25 units with a velocity 1.5m/s. a) 39.68 b) 68.39 c) 86.93 d) 93.68

Description : Find the Lorentz force of a charge 2.5C having an electric field of 5 units and magnetic field of 7.25 units with a velocity 1.5m/s. a) 39.68 b) 68.39 c) 86.93 d) 93.68

Last Answer : a) 39.68

When the electric field travels in +x direction and the EM wave is travelling the –y direction, then the magnetic field will be travelling in which direction? a) +z direction b) –z direction c) Either +z or –z direction d) Does not trave

Description : When the electric field travels in +x direction and the EM wave is travelling the –y direction, then the magnetic field will be travelling in which direction? a) +z direction b) –z direction c) Either +z or –z direction d) Does not trave

Last Answer : c) Either +z or –z direction

Find the magnetic field intensity of a material with flux density of 24 units in air(in 10 6 order) a) 19.09 b) 21 c) 25 d) 26.78

Description : Find the magnetic field intensity of a material with flux density of 24 units in air(in 10 6 order) a) 19.09 b) 21 c) 25 d) 26.78

Last Answer : a) 19.09

Find the magnetic field when the magnetic vector potential is a unit vector. a) 1 b) -1 c) 0 d) 2

Description : Find the magnetic field when the magnetic vector potential is a unit vector. a) 1 b) -1 c) 0 d) 2

Last Answer : c) 0

The inductance is the measure of a) Electric charges stored by the material b) Emf generated by energising the coil c) Magnetic field stored by the material d) Magnetization of dipoles

Description : The inductance is the measure of a) Electric charges stored by the material b) Emf generated by energising the coil c) Magnetic field stored by the material d) Magnetization of dipoles

Last Answer : c) Magnetic field stored by the material

Find the magnetic field intensity when the magnetic vector potential x i + 2y j + 3z k. a) 6 b) -6 c) 0 d) 1

Description : Find the magnetic field intensity when the magnetic vector potential x i + 2y j + 3z k. a) 6 b) -6 c) 0 d) 1

Last Answer : b) -6

Find the current when the magnetic field intensity is given by 2L and L varies as 0->1. a) 2 b) 1 c) 0.5 d) 0

Description : Find the current when the magnetic field intensity is given by 2L and L varies as 0->1. a) 2 b) 1 c) 0.5 d) 0

Last Answer : b) 1

The magnetic field intensity of an infinite sheet of charge with charge density 36.5 units in air will be a) 18.25 b) 11.25 c) 73 d) 1/36.5

Description : The magnetic field intensity of an infinite sheet of charge with charge density 36.5 units in air will be a) 18.25 b) 11.25 c) 73 d) 1/36.5

Last Answer : a) 18.25

Find the magnetic field intensity of a toroid of turns 40 and radius 20cm. The current carried by the toroid be 3.25A. a) 103.45 b) 102 c) 105.7 d) 171

Description : Find the magnetic field intensity of a toroid of turns 40 and radius 20cm. The current carried by the toroid be 3.25A. a) 103.45 b) 102 c) 105.7 d) 171

Last Answer : a) 103.45