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21 Cards in this Set

  • Front
  • Back

Electricity

The form of energy that produces light,heat,magnetic n chemical changes

Electrons

Tiny,negatively charged particles.

Current

Flow of electrons along a path a conductor.

strength

Amp

Volt

Pressure

Omh

Resistance

Watt

Amount used

Hertz

Frequency

2 forms of current

DC and AC

Special instruments to change currents

Converter and rectifyer

Generator

Has neg. N pos. Terminal, used n salons most often,produces alternating current, and uses mechanical energy to produce flow of electrons.

Battery

Has a neg. And pos. Terminal,produces direct current only,electrons flow toward positive terminal.

2 conditions necessary for an electric current.

Source and circuit

2 ways electrons flow

Closed path (circuit) and open circuit

Parallel wiring

Powers several loads at once or different times.

Series wiring

Runs all loads at the same time. Circuits travel from one load to the next.

Overload

Too many appliances on one circuit r being operated at the same time,line has more current than it is designed to carry.

Short circuit

Occurs when a foreign conductor comes in contact with wire carrying current to load.

Fuze

Safety device containing fine metal wire that allows current to flow thru it n melts fine wire to break current if overload occurs

Circuit breaker

Reusable device that breaks the flow of current when an overload occurs

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.