Moving a conductor through a magnetic field creates an induced voltage. The voltage that is generated in the conductor is called the induced electromotive force (EMF). The induced EMF is higher if the movement of the conductor, within the magnetic flux, is faster; this is called Faraday’s Law.
Induced EMF becomes zero when the movement of the conductor stops. The induced voltage is observed to be larger if the magnetic field, conductor motion and the conductor are perpendicular to each other. The copper wire, a conductor, contains free electrons. The movement of the conductor allows these electrons, to arrive at one side of it, leaving the other side positively charged. Hence, a voltage is developed by the separation of charges.Learn More
Nickel, iron and cobalt are magnetic metals. Most other metals, including gold, copper, silver and magnesium, are generally not magnetic, although some of these metals might become slightly magnetic if placed in a magnetic field.Full Answer >
Magnetism occurs when iron is present in metals, so metals can be non-magnetic when they don't contain iron. Although some metals are not magnetic, they still hold the properties of metal and are considered as such.Full Answer >
The technical definition of magnetic force is the mechanical force exerted from a magnetic field to a magnetic pole that is placed within that particular magnetic field. Magnetic force involves the simultaneous attraction and repulsion that occurs between particles that are electrically charged and are within the magnetic field itself.Full Answer >
Magnetic levitation is a method of supporting an object with the repulsive force of magnets and the stability of servomechanisms. The object is thus suspended in the air, counteracting the effects of gravity.Full Answer >