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Electricity & Magnetism Flashcards

Electricity & Magnetism Flashcards
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Conductors
This type of material has a lot of free electrons. This means it easily moves both electricity and heat.
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Insulators
Materials of this type don't have a lot of free electrons. Electrical energy doesn't transfer well through these materials.
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Electrical Resistance
We use this term to refer to how well a given material resists electrical currents. This increases with heat.
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Electric Charge
A property that electrons and protons possess. This charge comes in two varieties, positive and negative. Charges may transfer. Attraction occurs between opposite charges; like charges repel.
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Electricity
This type of energy is a result of the electric charges associated with protons and electrons.
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Electrons
A negatively charged subatomic particle.
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Neutrons
This subatomic particle is located in the middle of atoms. It doesn't have a charge.
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Protons
A subatomic particle with a positive charge. You can find this particle in the nucleus of atoms.
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Atoms
These particles make up everything around us. They have a nucleus that contains neutrons and protons. Electrons orbit this nucleus.
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18 cards in set

Flashcard Content Overview

You can use these flashcards as tools in order to review atoms, protons, neutrons and electrons and the role these particles play in electricity. You'll be able to focus on conductors, insulators, resistance and electric charges. Ohm's Law, alternating current and direct current will also be covered by this set. Additionally, these cards discuss magnetic force, permanent magnets and ferromagnetic materials.

Front
Back
Atoms
These particles make up everything around us. They have a nucleus that contains neutrons and protons. Electrons orbit this nucleus.
Protons
A subatomic particle with a positive charge. You can find this particle in the nucleus of atoms.
Neutrons
This subatomic particle is located in the middle of atoms. It doesn't have a charge.
Electrons
A negatively charged subatomic particle.
Electricity
This type of energy is a result of the electric charges associated with protons and electrons.
Electric Charge
A property that electrons and protons possess. This charge comes in two varieties, positive and negative. Charges may transfer. Attraction occurs between opposite charges; like charges repel.
Electrical Resistance
We use this term to refer to how well a given material resists electrical currents. This increases with heat.
Insulators
Materials of this type don't have a lot of free electrons. Electrical energy doesn't transfer well through these materials.
Conductors
This type of material has a lot of free electrons. This means it easily moves both electricity and heat.
Ohm's Law
A scientific law that focuses on how current, voltage and resistance interact with one another.
Ohm's Law Formula
Voltage = Current x Ohms
Alternating Current (AC)
A type of electrical current that moves electrons around and changes their directions. It works better when electrons must travel long distances.
Direct Current (DC)
In this type of electrical current, all the electrons go the same direction.
Electromagnets
A kind of magnet that generates a magnetic field with an electric current. It will be stronger if you include a ferromagnetic material and raise the current.
Magnetic Force
A force that effects particles with some kind of charge as they move in magnetic fields. Particles that don't move don't experience this force, nor do those moving parallel to the field.
Cause of Magnetic Force Fields
Moving electrons are responsible for creating this force.
Ferromagnetic Materials
These are materials that can turn into magnets if they're exposed to a magnetic field. The magnets on your fridge are this type of material.
Permanent Magnet
A type of magnet formed of materials that retain magnetism without exposure to an outside magnetic field. They have an aligned domain configuration.

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