True statements among the following statements about a superconductor below its critical temperature.

Question

Want to see more full solutions like this?

Answer 1

Question

Chapter 43, Problem 1OQ

To determine

True statements among the following statements about a superconductor below its critical temperature.

Expert Solution & Answer

Answer to Problem 1OQ

(a) False

(b) False

(c) True

(d) True

(e) True

Explanation of Solution

(a)

A super conductor is a material that offers zero resistance to the passage of electrons. It exhibits superconductivity below a particular temperature called critical temperature. They also expels all the magnetic flux lines.

When the temperature of a super conductor is reduced beyond its critical temperature, all the magnetic field lines from the conductor will be expelled. So if the super conductor carried infinite current, it would produce infinite magnetic field which is against the theory of super conductors. Hence statement (a) is False_.

(b)

A conductor becomes super conductor if the temperature is reduced below the critical temperature of the conductor. A condition that they should carry some non-zero current in it does not exist. So statement (b) is False_.

(c)

Write the expression for resistivity of a conductor.

ρ=EJ

Here, ρ is the resistivity of a conductor, E is the electric field, and J is the current density.

For a superconductor under critical temperature, the resistivity is zero. From the above equation, if resistivity has to be zero, then electric field must be zero. Thus option (c) is True_.

(d)

When the temperature of a conductor is reduced below its critical temperature, resistance reduces to zero and all the magnetic field lines inside the conductor is expelled. Then the conductor is said to be a super conductor. When the temperature is lowered, the electrons will rearrange themselves to make the net magnetic field equal to zero. Thus option (d) is True_.

(e)

For internal energy to be produced, the charge carriers should collide with the lattice ions. For normal conductors the charge carriers while moving collide with the lattice and produce energy. But in super conductor the current is carried by cooper pairs. But cooper pairs never collide with lattice as they remain in pairs. So internal energy is produced. Thus option (e) is True_.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Students have asked these similar questions

ROTATIONAL DYNAMICS Question 01 A solid circular cylinder and a solid spherical ball of the same mass and radius are rolling together down the same inclined. Calculate the ratio of their kinetic energy. Assume pure rolling motion Question 02 A sphere and cylinder of the same mass and radius start from ret at the same point and more down the same plane inclined at 30° to the horizontal Which body gets the bottom first and what is its acceleration b) What angle of inclination of the plane is needed to give the slower body the same acceleration Question 03 i) Define the angular velocity of a rotating body and give its SI unit A car wheel has its angular velocity changing from 2rads to 30 rads seconds. If the radius of the wheel is 400mm. calculate ii) The angular acceleration iii) The tangential linear acceleration of a point on the rim of the wheel Question 04 in 20

Question B3 Consider the following FLRW spacetime: t2 ds² = -dt² + (dx² + dy²+ dz²), t2 where t is a constant. a) State whether this universe is spatially open, closed or flat. [2 marks] b) Determine the Hubble factor H(t), and represent it in a (roughly drawn) plot as a function of time t, starting at t = 0. [3 marks] c) Taking galaxy A to be located at (x, y, z) = (0,0,0), determine the proper distance to galaxy B located at (x, y, z) = (L, 0, 0). Determine the recessional velocity of galaxy B with respect to galaxy A. d) The Friedmann equations are 2 k 8πG а 4πG + a² (p+3p). 3 a 3 [5 marks] Use these equations to determine the energy density p(t) and the pressure p(t) for the FLRW spacetime specified at the top of the page. [5 marks] e) Given the result of question B3.d, state whether the FLRW universe in question is (i) radiation-dominated, (ii) matter-dominated, (iii) cosmological-constant-dominated, or (iv) none of the previous. Justify your answer. f) [5 marks] A conformally…

SECTION B Answer ONLY TWO questions in Section B [Expect to use one single-sided A4 page for each Section-B sub question.] Question B1 Consider the line element where w is a constant. ds²=-dt²+e2wt dx², a) Determine the components of the metric and of the inverse metric. [2 marks] b) Determine the Christoffel symbols. [See the Appendix of this document.] [10 marks] c) Write down the geodesic equations. [5 marks] d) Show that e2wt it is a constant of geodesic motion. [4 marks] e) Solve the geodesic equations for null geodesics. [4 marks]

Answer 2

Question

Chapter 43, Problem 1OQ

To determine

True statements among the following statements about a superconductor below its critical temperature.

Expert Solution & Answer

Answer to Problem 1OQ

(a) False

(b) False

(c) True

(d) True

(e) True

Explanation of Solution

(a)

A super conductor is a material that offers zero resistance to the passage of electrons. It exhibits superconductivity below a particular temperature called critical temperature. They also expels all the magnetic flux lines.

When the temperature of a super conductor is reduced beyond its critical temperature, all the magnetic field lines from the conductor will be expelled. So if the super conductor carried infinite current, it would produce infinite magnetic field which is against the theory of super conductors. Hence statement (a) is False_.

(b)

A conductor becomes super conductor if the temperature is reduced below the critical temperature of the conductor. A condition that they should carry some non-zero current in it does not exist. So statement (b) is False_.

(c)

Write the expression for resistivity of a conductor.

ρ=EJ

Here, ρ is the resistivity of a conductor, E is the electric field, and J is the current density.

For a superconductor under critical temperature, the resistivity is zero. From the above equation, if resistivity has to be zero, then electric field must be zero. Thus option (c) is True_.

(d)

When the temperature of a conductor is reduced below its critical temperature, resistance reduces to zero and all the magnetic field lines inside the conductor is expelled. Then the conductor is said to be a super conductor. When the temperature is lowered, the electrons will rearrange themselves to make the net magnetic field equal to zero. Thus option (d) is True_.

(e)

For internal energy to be produced, the charge carriers should collide with the lattice ions. For normal conductors the charge carriers while moving collide with the lattice and produce energy. But in super conductor the current is carried by cooper pairs. But cooper pairs never collide with lattice as they remain in pairs. So internal energy is produced. Thus option (e) is True_.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Question

Chapter 43, Problem 1OQ

To determine

True statements among the following statements about a superconductor below its critical temperature.

Expert Solution & Answer

Answer to Problem 1OQ

(a) False

(b) False

(c) True

(d) True

(e) True

Explanation of Solution

(a)

A super conductor is a material that offers zero resistance to the passage of electrons. It exhibits superconductivity below a particular temperature called critical temperature. They also expels all the magnetic flux lines.

When the temperature of a super conductor is reduced beyond its critical temperature, all the magnetic field lines from the conductor will be expelled. So if the super conductor carried infinite current, it would produce infinite magnetic field which is against the theory of super conductors. Hence statement (a) is False_.

(b)

A conductor becomes super conductor if the temperature is reduced below the critical temperature of the conductor. A condition that they should carry some non-zero current in it does not exist. So statement (b) is False_.

(c)

Write the expression for resistivity of a conductor.

ρ=EJ

Here, ρ is the resistivity of a conductor, E is the electric field, and J is the current density.

For a superconductor under critical temperature, the resistivity is zero. From the above equation, if resistivity has to be zero, then electric field must be zero. Thus option (c) is True_.

(d)

When the temperature of a conductor is reduced below its critical temperature, resistance reduces to zero and all the magnetic field lines inside the conductor is expelled. Then the conductor is said to be a super conductor. When the temperature is lowered, the electrons will rearrange themselves to make the net magnetic field equal to zero. Thus option (d) is True_.

(e)

For internal energy to be produced, the charge carriers should collide with the lattice ions. For normal conductors the charge carriers while moving collide with the lattice and produce energy. But in super conductor the current is carried by cooper pairs. But cooper pairs never collide with lattice as they remain in pairs. So internal energy is produced. Thus option (e) is True_.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Question

Chapter 43, Problem 1OQ

To determine

True statements among the following statements about a superconductor below its critical temperature.

Expert Solution & Answer

Answer to Problem 1OQ

(a) False

(b) False

(c) True

(d) True

(e) True

Explanation of Solution

(a)

A super conductor is a material that offers zero resistance to the passage of electrons. It exhibits superconductivity below a particular temperature called critical temperature. They also expels all the magnetic flux lines.

When the temperature of a super conductor is reduced beyond its critical temperature, all the magnetic field lines from the conductor will be expelled. So if the super conductor carried infinite current, it would produce infinite magnetic field which is against the theory of super conductors. Hence statement (a) is False_.

(b)

A conductor becomes super conductor if the temperature is reduced below the critical temperature of the conductor. A condition that they should carry some non-zero current in it does not exist. So statement (b) is False_.

(c)

Write the expression for resistivity of a conductor.

ρ=EJ

Here, ρ is the resistivity of a conductor, E is the electric field, and J is the current density.

For a superconductor under critical temperature, the resistivity is zero. From the above equation, if resistivity has to be zero, then electric field must be zero. Thus option (c) is True_.

(d)

When the temperature of a conductor is reduced below its critical temperature, resistance reduces to zero and all the magnetic field lines inside the conductor is expelled. Then the conductor is said to be a super conductor. When the temperature is lowered, the electrons will rearrange themselves to make the net magnetic field equal to zero. Thus option (d) is True_.

(e)

For internal energy to be produced, the charge carriers should collide with the lattice ions. For normal conductors the charge carriers while moving collide with the lattice and produce energy. But in super conductor the current is carried by cooper pairs. But cooper pairs never collide with lattice as they remain in pairs. So internal energy is produced. Thus option (e) is True_.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 43, Problem 1OQ

To determine

True statements among the following statements about a superconductor below its critical temperature.

Expert Solution & Answer

Answer to Problem 1OQ

(a) False

(b) False

(c) True

(d) True

(e) True

Explanation of Solution

(a)

A super conductor is a material that offers zero resistance to the passage of electrons. It exhibits superconductivity below a particular temperature called critical temperature. They also expels all the magnetic flux lines.

When the temperature of a super conductor is reduced beyond its critical temperature, all the magnetic field lines from the conductor will be expelled. So if the super conductor carried infinite current, it would produce infinite magnetic field which is against the theory of super conductors. Hence statement (a) is False_.

(b)

A conductor becomes super conductor if the temperature is reduced below the critical temperature of the conductor. A condition that they should carry some non-zero current in it does not exist. So statement (b) is False_.

(c)

Write the expression for resistivity of a conductor.

ρ=EJ

Here, ρ is the resistivity of a conductor, E is the electric field, and J is the current density.

For a superconductor under critical temperature, the resistivity is zero. From the above equation, if resistivity has to be zero, then electric field must be zero. Thus option (c) is True_.

(d)

When the temperature of a conductor is reduced below its critical temperature, resistance reduces to zero and all the magnetic field lines inside the conductor is expelled. Then the conductor is said to be a super conductor. When the temperature is lowered, the electrons will rearrange themselves to make the net magnetic field equal to zero. Thus option (d) is True_.

(e)

For internal energy to be produced, the charge carriers should collide with the lattice ions. For normal conductors the charge carriers while moving collide with the lattice and produce energy. But in super conductor the current is carried by cooper pairs. But cooper pairs never collide with lattice as they remain in pairs. So internal energy is produced. Thus option (e) is True_.

Answer 6

Chapter 43, Problem 1OQ

To determine

True statements among the following statements about a superconductor below its critical temperature.

Expert Solution & Answer

Answer to Problem 1OQ

(a) False

(b) False

(c) True

(d) True

(e) True

Explanation of Solution

(a)

A super conductor is a material that offers zero resistance to the passage of electrons. It exhibits superconductivity below a particular temperature called critical temperature. They also expels all the magnetic flux lines.

When the temperature of a super conductor is reduced beyond its critical temperature, all the magnetic field lines from the conductor will be expelled. So if the super conductor carried infinite current, it would produce infinite magnetic field which is against the theory of super conductors. Hence statement (a) is False_.

(b)

A conductor becomes super conductor if the temperature is reduced below the critical temperature of the conductor. A condition that they should carry some non-zero current in it does not exist. So statement (b) is False_.

(c)

Write the expression for resistivity of a conductor.

ρ=EJ

Here, ρ is the resistivity of a conductor, E is the electric field, and J is the current density.

For a superconductor under critical temperature, the resistivity is zero. From the above equation, if resistivity has to be zero, then electric field must be zero. Thus option (c) is True_.

(d)

When the temperature of a conductor is reduced below its critical temperature, resistance reduces to zero and all the magnetic field lines inside the conductor is expelled. Then the conductor is said to be a super conductor. When the temperature is lowered, the electrons will rearrange themselves to make the net magnetic field equal to zero. Thus option (d) is True_.

(e)

For internal energy to be produced, the charge carriers should collide with the lattice ions. For normal conductors the charge carriers while moving collide with the lattice and produce energy. But in super conductor the current is carried by cooper pairs. But cooper pairs never collide with lattice as they remain in pairs. So internal energy is produced. Thus option (e) is True_.

Answer 7

Chapter 43, Problem 1OQ

To determine

True statements among the following statements about a superconductor below its critical temperature.

Answer 8

Expert Solution & Answer

Answer to Problem 1OQ

(a) False

(b) False

(c) True

(d) True

(e) True

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

(a)

A super conductor is a material that offers zero resistance to the passage of electrons. It exhibits superconductivity below a particular temperature called critical temperature. They also expels all the magnetic flux lines.

When the temperature of a super conductor is reduced beyond its critical temperature, all the magnetic field lines from the conductor will be expelled. So if the super conductor carried infinite current, it would produce infinite magnetic field which is against the theory of super conductors. Hence statement (a) is False_.

(b)

A conductor becomes super conductor if the temperature is reduced below the critical temperature of the conductor. A condition that they should carry some non-zero current in it does not exist. So statement (b) is False_.

(c)

Write the expression for resistivity of a conductor.

ρ=EJ

Here, ρ is the resistivity of a conductor, E is the electric field, and J is the current density.

For a superconductor under critical temperature, the resistivity is zero. From the above equation, if resistivity has to be zero, then electric field must be zero. Thus option (c) is True_.

(d)

When the temperature of a conductor is reduced below its critical temperature, resistance reduces to zero and all the magnetic field lines inside the conductor is expelled. Then the conductor is said to be a super conductor. When the temperature is lowered, the electrons will rearrange themselves to make the net magnetic field equal to zero. Thus option (d) is True_.

(e)

For internal energy to be produced, the charge carriers should collide with the lattice ions. For normal conductors the charge carriers while moving collide with the lattice and produce energy. But in super conductor the current is carried by cooper pairs. But cooper pairs never collide with lattice as they remain in pairs. So internal energy is produced. Thus option (e) is True_.