The characteristics of a magnetic field: (Essay Example.

Distance away from the wire and the strength of the magnetic field are inversely related. That’s is, as the distance increases, the magnetic field decreases. Additionally, although a Tesla is the standard unit of measurement for magnetic fields, a Tesla is a rather large unit of magnetic field.

A wire carrying a current creates a magnetic field. This can interact with another magnetic field, causing a force that pushes the wire at right angles. This is called the motor effect. There is a.

Introduction Electromagnetic induction is the production of voltage across a conductor situated in a changing magnetic field or a conductor. UK Essays FREE Providers of free study resources.

When two pieces of iron are attracted to each other by physical means or electrical means. 2. Torque is A. Strength that a motor produces by turning. 3. A magnetic field is D. All the above. 4. True or False: A permanent magnet is a piece of material that has been magnetized and can hold its magnetic strength for a reasonable length of time. True. 5.

Magnetic field strength is defined as the force acting per unit current in a wire of unit length, which is perpendicular to the field. Magnetic field strength is measured in tesla, T. A magnetic field has a strength of 1T if a wire of length 1 metre experiences a force of 1N when a current of 1A flows in the wire.

To conclude, the experiment outlined in this report was successful in demonstrating the effects of magnetic fields produced by long wires and the effects of ferrite on the emf induced in a coil, successfully validating the theory from section 2 that the magnitude of the magnetic flux field, B, is proportional to the reciprocal of the distance of the coil from the wire.

Magnetic field strength (remanence), resistance to demagnetisation (coercivity) and pulling force are all often summarised as strength and all are desired attributes of a permanent magnet. The single primary indicator of a permanent magnet’s strength is its maximum energy product value measured in Mega Gauss Oersteds (MGOe).

Confusion between B and H - a problem recognised in the literature about the confusion between quantities and physical units of magnetic flux density B and magnetic field strength H. Both B and H are strictly defined in terms of measurement units as well as their physical meaning. Electric current I produces around itself magnetic field.

A magnetic field is a vector field that describes the magnetic influence of electric charges in relative motion and magnetized materials. The effects of magnetic fields are commonly seen in permanent magnets, which pull on magnetic materials (such as iron) and attract or repel other magnets.

Hysteresis, lagging of the magnetization of a ferromagnetic material, such as iron, behind variations of the magnetizing field. When ferromagnetic materials are placed within a coil of wire carrying an electric current, the magnetizing field, or magnetic field strength H, caused by the current forces some or all of the atomic magnets in the material to align with the field.

Contents. 1. What are the known effects of exposure to electric and magnetic fields? 2. Is there any long term health risk associated with exposure to electric and magnetic fields?

The strength of the magnetic field it produces is at any given point proportional to the magnitude of its magnetic moment. In addition, when the magnet is put into an external magnetic field, produced by a different source, it is subject to a torque tending to orient the magnetic moment parallel to the field.