What is poloidal magnetic field?

What is poloidal magnetic field?

The poloidal magnetic potential is a scalar quantity that contains information about the radial and latitudinal magnetic field vectors. To see the radial magnetic field, see The Solar Dynamo: Toroidal and Radial Magnetic Fields.

What is poloidal flux?

The poloidal flux is the magnetic flux passing through a ribbon going from the magnetic axis (the centre of the device) to the flux surface, and the toroidal flux is the magnetic flux passing through a circle which encloses the magnetic axis.

What does the magnetic field do?

Generated by the motion of molten iron in Earth’s core, the magnetic field protects our planet from cosmic radiation and from the charged particles emitted by our Sun. It also provides the basis for navigation with a compass.

What are the roles of toroidal and poloidal magnetic field on tokamak?

The poloidal field is created from the transformer effect and the current in the plasma itself. This field causes the plasma particles to spin in a helix pattern as it travels through the tokamak. This spinning keeps the particles constantly moving toward the center of the toroidal field and away from the walls.

What are tokamaks made of?

Basic tokamak components include the toroidal field coils (in blue), the central solenoid (in green), and poloidal field coils (in grey). The total magnetic field (in black) around the torus confines the path of travel of the charged plasma particles.

What are toroids used for?

A toroid is a coil of insulated or enameled wire wound on a donut-shaped form made of powdered iron. A toroid is used as an inductor in electronic circuits, especially at low frequencies where comparatively large inductances are necessary.

What is the definition of toroidal?

Definition of toroidal

: of, relating to, or shaped like a torus or toroid : doughnut-shaped a toroidal resistance coil.

What is magnetic field short answer?

The magnetic field is a region around a magnetic material or a moving electric charge within which the force of magnetism acts. A magnetic field is a force field that is created by moving electric charges and magnetic dipoles and exerts a force on other nearby moving charges and magnetic dipoles.

What is a magnetic field simple definition?

Definition of magnetic field
: the portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected.

What is a toroidal magnetic field?

toroidal field A magnetic field with no radial components, e.g. where the magnetic lines of force lie on an electrically conducting spherical surface such as the surface of the Earth’s core. Such a field is not detectable at the Earth’s surface, in contrast to a poloidal field. A Dictionary of Earth Sciences.

What are the roles of toroidal magnetic field on tokamak?

In a tokamak, magnetic field coils confine plasma particles to allow the plasma to achieve the conditions necessary for fusion. One set of magnetic coils generates an intense “toroidal” field, directed the long way around the torus.

Why are tokamaks used?

tokamak, Device used in nuclear-fusion research for magnetic confinement of plasma. It consists of a complex system of magnetic fields that confine the plasma of reactive charged particles in a hollow, doughnut-shaped container.

How do tokamaks work?

What is toroid formula?

The magnetic field of a current-carrying toroid is independent of the radius. This is because the magnetic field of the toroid is given as B = μonI where n is the number of turns, I is the electric current, and μo is the permeability.

What toroid means?

Definition of toroid
1 : a surface generated by a closed plane curve rotated about a line that lies in the same plane as the curve but does not intersect it. 2 : a body whose surface has the form of a toroid.

What is toroid Class 12?

Toroid is a hollow circular ring on which a large number of turns of a wire are closely wound. It can be viewed as a solenoid which has been bent into a circular shape to close on itself. Image Source: NCERT Textbooks. The magnetic field in the open space inside (point P) and exterior to the toroid (point Q) is zero.

What is the formula of toroid?

The formula of the toroid is used for the calculation of the number of turns in a toroidal coil.
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Difference between Solenoid and Toroid.

What is a magnetic field called?

Around a permanent magnet or a wire carrying a steady electric current in one direction, the magnetic field is stationary and referred to as a magnetostatic field. At any given point its magnitude and direction remain the same.

What is meant by magnetic field 2 marks?

The space around the magnet where its influence can be experienced is known as magnetic field. This field is formed by the magnetic lines of force which run from the north pole to south pole.

What is a magnetic field Class 7?

(c) Magnetic field is defined as the region around a magnet where the magnetic force can be experience by an object. Magnetic field lines are the geometrical representation of magnetic field.

What is the SI unit of magnetic field?

Teslas
Magnetic field is denoted by B and H. The SI unit of H is amperes per metre and the SI unit of B is Newtons per metre per ampere or Teslas.

What is the mean of toroid?

How do tokamaks heat plasma?

Within the tokamak, the changing magnetic fields that are used to control the plasma produce a heating effect. The magnetic fields create a high-intensity electrical current through induction, and as this current travels through the plasma, electrons and ions become energized and collide.

What is the full form of ITER?

Institute of Technical Education and Research.

Where is toroid used?

A toroid is used as an inductor in electronic circuits, especially at low frequencies where comparatively large inductances are necessary. A toroid has more inductance , for a given number of turns, than a solenoid with a core of the same material and similar size.