Magnetic Field Vector Field

Magnetism Magnetic Field Magnetic Field Lines and Magnetic Flux Motion of Charged Particles in a Magnetic Field Applications of Motion of Charged Particles Magnetic Force on a Current-Carrying Conductor Force and Torque on a Current Loop A moving charge or collection of moving charges e.g. electric current produces a magnetic field. Chap. 28.

This magnetic field is a vector quantity it has both magnitude and direction. For a long straight wire, the magnitude of this field depends on the distance r from the wire, and is given by B aIr, where the same constant a appears as before.

Magnetic Field A magnetic field is a vector field that describes the magnetic influence of electric currents and magnetic materials. It is an invisible force that surrounds magnets and electric currents, exerting forces on other magnetic materials and moving charges. The magnetic field is often represented by the symbol B and is measured in units of Tesla T or Gauss G, where 1 T 10,000 G

Magnetic Vector Potential In magnetism, the magnetic field provides the direction and strength of the magnetic force in a region of space. For example, a current-carrying wire produces circular magnetic field lines around it, whose magnitude and direction can be found by Ampere's Law and the right-hand thumb rule.

A vector field is a function which associates to a point of the space domain a vector, namely a set of number. So, in this case, a well defined magnetic field vector gives you these sets of numbers for every point of the space. Each of these sets of numbers contains information about the intensity and the direction of the magnetic field in the relative point so that you can evaluate the

The Magnetic Field and Vector Potential 6-1 Magnetic Field and Ampre's Law LORENTZ FORCE Observing two wires running parallel to one another and carrying currents in the same direction The two sections of wire tend to fly together. The force which depends only on the charge movement in the wires, that is, on the two currents are called magnetic.

14 The Magnetic Field in Various Situations 14-1 The vector potential In this chapter we continue our discussion of magnetic fields associated with steady currentsthe subject of magnetostatics.

Magnetic fields surround magnetized materials, electric currents, and electric fields varying in time. Since both strength and direction of a magnetic field may vary with location, it is described mathematically by a function assigning a vector to each point of space, called a vector field more precisely, a pseudovector field.

Magnetic field lines are vector quantities because they have a direction and magnitude. Outside the magnet, those lines are always directed from the north to south pole.

The Main Idea What is a Magnetic Field? Magnetic fields can be simply described as a field that extends through space, originating from a moving electric charge or from a magnetic dipole. This field can produce a force when acting on another magnetic object. There are many ways that a magnetic field can be generated, but the two most fundamental sources, at least for this class, are magnetic