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25 Cards in this Set
- Front
- Back
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Electric circuit
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A path which electrons flow through from a negative terminal to a positive terminal. Loads may be placed along this circuit in order for them to be powered.
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Charged
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When something has an unequal number of protons and electrons
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Neutral
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When the charges in something are balanced equally
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Electric current
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The flow of electrons or protons within a circuit
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Static electricity
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An imbalance of electrons within something. This imbalance is corrected by grounding the object. When the object is grounded to balance the electrons it is called an electrostatic discharge
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Laws of Charges
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Objects that are charged the same way repel each other
Objects that are opposite charges attract each other Charged objects attract neutral objects |
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Insulator
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Something that does not conduct electricity
Insulators surround wires in order to prevent the electrons from creating a different path instead of flowing in the desired way |
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Conductors
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Something that conducts electricity
Wires are conductors |
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Grounding
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When an object is connected to the ground in order to remove static electricity from it
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Battery
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A group of cells connected together
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Switch
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A part of a circuit that can be opened to stop the flow of electrons then closed to allow the flow to continue
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Resistor
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A part of a circuit that resists the flow of electrons
Resistors can be used to lower the amount of electrons moving through the circuit |
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Voltage
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The pressure of the electrons to move through the circuit
Represented by the symbol V |
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Amperes
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The unit of measure used ti measure the current going through a circuit
Represented by the symbol A |
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Potential difference
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The difference between the negative e and positive charges in a circuit
The higher the potential difference the higher the voltage because the voltage is the measure of the push of the electrons |
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Ohm
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A unit for measuring resistance named after the physicist Georg Simon Ohm
Rpresented with the symbol Ω |
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Ohm’s Law
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The equation used to find voltage, current or resistance within a circuit. This equation states that V=IR [(Voltage=(Current)(Resistance)]
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Series circuit
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A circuit where all loads are on one path in the circuit
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Parallel circuit
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A circuit that includes multiple paths
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Alternating current (AC)
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An electrical current that varies in its direction and strength
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Direct current (DC)
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Flow of electricity with one direction of flow
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Watt
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The unit for measuring power
Represented by the symbol W |
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Ground wire
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A wire used to connect a circuit to the ground therefore preventing the build-up of static electricity
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Neutral wire
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A wire used to ground a circuit so that static electricity does not build up
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Fuse
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A part of some circuits made of a metal that has a lower melting point than the conducting wire. If a circuit gets too hot the fuse will melt and stop the circuit from overheating and possibly causing a fire
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