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Capítulo 28

Forças e Campos Magnéticos

Magnetismo
Magnetismo
Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows ...
Campos Magnéticos
Campos Magnéticos
A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on ...
Linhas do Campo Magnético
Linhas do Campo Magnético
The representation of magnetic fields by magnetic field lines is very useful in visualizing the strength and direction of the magnetic field. Each of the ...
Fluxo Magnético
Fluxo Magnético
The magnetic flux measures the number of magnetic field lines passing through a given surface area. The SI unit for magnetic flux is the weber (Wb). ...
Movimento De Uma Partícula Carregada em um Campo Magnético
Movimento De Uma Partícula Carregada em um Campo Magnético
A charged particle experiences a force when moving through a magnetic field. Consider the field to be uniform and the charged particle to move ...
Força Magnética
Força Magnética
In addition to the electric forces between electric charges, moving electric charges exert magnetic forces on each other. A magnetic field is created by a ...
Força Magnética em um Condutor Transportador de Corrente
Força Magnética em um Condutor Transportador de Corrente
Moving charges experience a force in a magnetic field. Since the magnetic fields produced by moving charges are proportional to the current, a conductor ...
Força Magnética em Fios Condutores de Corrente: Exemplo
Força Magnética em Fios Condutores de Corrente: Exemplo
In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts ...
Força em uma Espira de Corrente em um Campo Magnético
Força em uma Espira de Corrente em um Campo Magnético
Magnetic forces on wires carrying current are most frequently applied in motors. A DC motor is a device that converts electrical energy into mechanical ...
Torque em uma Espira de Corrente em um Campo Magnético
Torque em uma Espira de Corrente em um Campo Magnético
The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between ...
Efeito Hall
Efeito Hall
Edwin H. Hall, in the year 1879, devised an experiment that could be used to identify the polarity of the predominant charge carriers in a conducting ...
Experimento e/m de Thomson
Experimento e/m de Thomson
In a beam of charged particles created by a heated cathode, the particles move at different speeds. However, many applications need a beam with uniform ...
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