Electric and Magnetic Interactions

Front

Magnetic Force Noun

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[mag-net-ik fors]

Back

Magnetic Force

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The force experienced by a charged particle when it moves through a magnetic field, perpendicular to both motion and field.

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Example: Magnetic field lines show the direction of magnetic force around a magnet.

Front

Electric Current Noun

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[i-lek-trik kur-uhnt]

Back

Electric Current

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The continuous flow of charged particles, such as electrons, through a conductive material or through empty space.

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Example: A battery powers a light bulb by allowing electric current to flow through wires.

Front

Galvanometer Noun

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[gal-vuh-nom-i-ter]

Back

Galvanometer

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A sensitive instrument used to detect and measure the magnitude and direction of small electric currents using an electromagnet.

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Example: The image shows a galvanometer measuring current from a battery through an iron coil.

Front

Electromagnet Noun

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[i-lek-troh-mag-nit]

Back

Electromagnet

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A type of magnet where the magnetic field is produced by an electric current flowing through a coil of wire.

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Example: The image shows how an electric current through a coil creates a magnetic field, illustrating an electromagnet.

Front

Electric Motor Noun

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[i-lek-trik moh-ter]

Back

Electric Motor

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A device that converts electrical energy into mechanical energy by using magnetic forces to rotate an axle.

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Example: The image shows how an electric motor uses magnetic forces to rotate an axle, converting electrical energy into mechanical energy.

Front

Armature Noun

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[ahr-muh-cher]

Back

Armature

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The rotating coil or loop of wire in an electric motor or generator through which current flows.

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Example: The image shows a wire coil (armature) rotating between magnetic poles, illustrating how current flows in an electric motor.

Front

Commutator Noun

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[kom-yoo-tey-ter]

Back

Commutator

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A device in a DC motor that reverses the direction of the current in the coil, allowing for continuous rotation.

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Example: The commutator in a DC motor reverses current direction, allowing continuous rotation.

Front

Brushes Noun

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[brush-iz]

Back

Brushes

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Stationary electrical contacts that conduct current from the power source to the commutator in a motor or generator.

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Example: Carbon brushes conduct electricity from the power source to the commutator in a motor, shown with arrows and labels.

Front

Electromagnetic Induction Noun

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[i-lek-troh-mag-net-ik in-duhk-shuhn]

Back

Electromagnetic Induction

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The process of generating an electric current by moving a conductor through a magnetic field or by changing the field.

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Example: A coil moving through a magnetic field generates an electric current.

Front

Induced Current Noun

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[in-doost kur-uhnt]

Back

Induced Current

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An electric current that is generated in a conductor by a changing magnetic field through electromagnetic induction.

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Example: A wire coil rotates in a magnetic field, generating an electric current shown by arrows.