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study words Flashcards

1
Q

Current that reverses polarity or direction with regular frequency. It can be single phase, two phase, three phase, or polyphase.

A

Alternating Current (AC)

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2
Q

A tubing, piping, or electrical wire installation that permits flow from the energy source back to energy source.

A

Circuit

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3
Q

A device that senses current flow and opens when its rated current flow is exceeded.

A

Circuit Breaker

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4
Q

Local, state, and national rules and regulations.

A

Codes

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5
Q

Material or substance that readily passes electricity.

A

Conductor

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6
Q

The flow of electrons through a conductor.

A

Current

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7
Q

Electric current that flows only in one direction.

A

Direct Current (DC)

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8
Q

The presence and flow of an electric charge.

A

Electricity

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9
Q

Electrical safety device consisting of a strip of fusible metal in a circuit that melts when the circuit is overloaded.

A

Fuse

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10
Q

Breaker specifically designed to open the circuit in the event of a ground fault.

A

Ground Fault Circuit Interrupter (GFCI)

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11
Q

A meter that reads multiple electrical properties, typically including volts and ohms.

A

Multimeter

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12
Q

The opposition to current flow by a physical conductor.

A

Resistance

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13
Q

A low resistance connection (usually accidental and undesirable) between two parts of an electrical circuit.

A

Short Circuit

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14
Q

The potential difference between two points.

A

Voltage

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15
Q

Nonmetallic-sheathed cable is widely used for branch circuits and feeders in residential and commercial systems. It is flame-retardant and moisture resistant but suitable for dry locations only.

A

Type NM

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16
Q

Underground feeder cable is sunlight and moisture resistant, suitable for outside use, and can be buried under the ground.

A

Type UF

17
Q

Another common type of cable is thermoplastic high heat-resistant nylon-coated and is suitable for dry and damp locations.

A

Type THHN

18
Q

Using a wire that is too small can lead to

A

overheating and potentially fire.

19
Q

12-gauge wire is often recommended for

A

residential applications.

20
Q

The smaller the number (gauge), the larger the

A

diameter of the wire.

21
Q

Wires larger than 1 gauge are designated as

A

0, 00, 000, and 0000.

22
Q

how is electric current measured

A

amps

23
Q

how is electric potential measured

A

volts

24
Q

how is electric work measured

A

watts

25
Q

how is resistance measured

A

Ohms

26
Q

what is the masure of electrical charge

A

coulomb

27
Q

The ability to make current flow is called

A

electromotive force or potential

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