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23 Cards in this Set
- Front
- Back
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Static Electricity
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The build up of charge on an object; the charge does NOT change
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Electric Charge
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A small particle with a negative charge (electron)
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3 Laws of Electrical Charges
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1. Opposites Attract. 2. Similair charges repel. 3. Charged objects attract neutral objects
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Electrical Discharge
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The transfer of electrons from a negatively charged object - through the air or by contact
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Electrical Current
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A continuously moving flow of electrons through a path
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Electrical Circuit
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a continuous pathway for electrons to flow through without difficulty
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Amperes
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The count of electrons that pass the point in a circuit in one second
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Voltage
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The measure of how much energy each electron has in a current
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Insulators
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Substances that do not allow electron flow
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Conductors
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Substances that allow electrons to pass
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Superconductors
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Perfect conductors of electricity, a substance that offers no resistance to electrons
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Resistor
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A substance that makes it difficult for electrons to get through
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Resistance
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A measure of how much difficulty the electrons have. Measured in Ohms.
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Power
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rate at which a device converts energy - how fast the device changes electrical energy into useful energy
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Energy
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The ability to do work, measured in Joules
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Electromagnetic Induction
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Using magnets and magnetic fields to force electrons to move
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Electrochemistry
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The study of the interaction of chemistry and electricity
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Electrolysis
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Using electricity to separate molecules into their atoms
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Electroplating
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The process of placing a thin coat of a metal onto an object by using electricity
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Electromagnet
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An iron core with copper wire wrapped around it that is magnetic only when electricity flows through the copper
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Commutator
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A split ring conductor that connects the coiled copper wire sometimes to the source
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Brushes
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The structures that connect the power supply to the commutator
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Armature
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The iron core with coiled copper wire that becomes an electromagnet
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