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Chapter 3 Flashcards > Chapter 10 > Flashcards

Chapter 10 Flashcards

0
Q

the field force exerted by electrical charges .may be repulsive of attractive depending on the kinds of charges inteacting

A

2.electrostatic force

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1
Q

all electrical phenomena relating to stationary electrical charges and the forces they exert

A
  1. static electricity
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2
Q

law stating that like electrical charges repel and unlike charges attract

A

3.law of charges

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3
Q

SI derived unit of electrical charge equivalent to the charge of 6.24x10^18 electrons and protons

A

4.Coulomb (C)

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4
Q

imaginary lines used to model electric and magnetic fields .density and direction represent the strength and direction of the field force at any point in the field

A

5.lines of force

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5
Q

creation of a charged region on a neutral object exposed to a nearby electrical charge

A

6.electrical induction

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6
Q

object or particle with two electrical or magnetic poles of opposite nature

A

7.dipole

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7
Q

instrument that can detect electrical charge

A

8.electroscope

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8
Q

material through heat and electricity easily flow .good conductors are materials that contain mobile,electrons,most are metals

A
  1. electrical conductor
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9
Q

material that does not easily conduct thermal energy or electricity

A
  1. electrical insulator
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10
Q

material that allows limited electron flow

A
  1. Semiconductor
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11
Q

loss of static charge on an object

A
  1. electrical discharge
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12
Q

metal rod attached to the highest point of a building designed to conduct a lightning discharge safely through cables to the ground ;protecting the building from damage

A
  1. lightning rod
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13
Q

early charge - storage device that consisted of a jar lined and coated with lead and that use electrical induction

A
  1. Leyden Jar
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14
Q

modern charge - storage device used in electrical and electronic curcuits of two or more conductive plates separated by an insulator

A
  1. capacitor
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15
Q

continuous flow of electrical charges

A

16.electrical current

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16
Q

hollow,vaccum filled glass device containing electrical plates with opposite charges

A

17.cathode

17
Q

energy or work that can be done by charges moving between two points of different voltages

A

18.electrical potential energy

18
Q

flow of positive charges through a conductor or electrolystic solution

A

19.conventional current

19
Q

electrical current that flows in only one direction

A

20.direct current

20
Q

complete path for an electrical current

A

21.electrical current

21
Q

only device that purposely converts electrical energy to another form of energy in an electrical circuit

A

22.electrical load

22
Q

device that opens or closes a gap in an electrical circuit to control the flow of current

A

23.switch

23
Q

source of electrical potential consisting of one or more voltaic cells

A

24.battery

24
Q

device that creates an electrical potential by either releasing electrons through chemical reaction

A

25.electrochemical cell

25
Q

amount of work required to move a unit charge between two points in a curcuit

A

26.volt

26
Q

SI unit base unit of electrical current defined as IA = IC/S

A

27.ampere

27
Q

property of all electrical curcuit elements that impedes the flow of current to some extent

A

28.electrical resistance

28
Q

electrical circuit component whose specific purpose is to impede current flow

A

29.resistor

29
Q

law stating that in a DC circuit component of resistance R ,the current through the component is directly proportional

A

30.Ohm’s law

30
Q

unit of elctrical energy used by utilities

A

31.Kilowatt hour

31
Q

SI unit of electrical resistance

A

32.ohm

32
Q

electrical circuit of a circuit with single path of current flow through a connected set of electrical

A

33.series circuit

33
Q

electrical circuit of a circuit with multiple parallel path

A

34.parallel circuit

34
Q

location in an electrical circuit with a single path of curreny flow

A

35.short circuit

35
Q

electrical device designed to open the circuit

A

36.overcurrent protection

36
Q

reusable overcurrent protection device that opens a switch

A

37.circuit breaker

37
Q

reusable overcurrent protection device that opens a switch when pulsing ,high-current conditions

A

38.arc-fault interrupter

38
Q

protection device that breaks a circuit ,conductor strip melts

A

39.fuse

39
Q

fault circuit interrupter electrical device that opens when it senses a path for the current to ground exists

A

40.ground - fault circuit

Chapter 3 Flashcards (9 decks)

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