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21 Cards in this Set
- Front
- Back
Electricity |
The form of energy that produces light,heat,magnetic n chemical changes |
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Electrons |
Tiny,negatively charged particles. |
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Current |
Flow of electrons along a path a conductor. |
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strength |
Amp |
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Volt |
Pressure |
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Omh |
Resistance |
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Watt |
Amount used |
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Hertz |
Frequency |
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2 forms of current |
DC and AC |
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Special instruments to change currents |
Converter and rectifyer |
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Generator |
Has neg. N pos. Terminal, used n salons most often,produces alternating current, and uses mechanical energy to produce flow of electrons. |
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Battery |
Has a neg. And pos. Terminal,produces direct current only,electrons flow toward positive terminal. |
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2 conditions necessary for an electric current. |
Source and circuit |
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2 ways electrons flow |
Closed path (circuit) and open circuit |
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Parallel wiring |
Powers several loads at once or different times. |
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Series wiring |
Runs all loads at the same time. Circuits travel from one load to the next. |
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Overload |
Too many appliances on one circuit r being operated at the same time,line has more current than it is designed to carry. |
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Short circuit |
Occurs when a foreign conductor comes in contact with wire carrying current to load. |
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Fuze |
Safety device containing fine metal wire that allows current to flow thru it n melts fine wire to break current if overload occurs |
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Circuit breaker |
Reusable device that breaks the flow of current when an overload occurs |
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Ground wire |
3-wire system running directly to the ground that protects u when operating certain kinds of appliances. Prevents excess flow of current from going to user.3-prong plug found on any appliance requiring this protection. |