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Electricity unit 1 > electricity flash cards kalleigh > Flashcards

electricity flash cards kalleigh

1
Q

electrical energy

A

Energy is the ability to do work, where work is done when a force moves an object.

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2
Q

static electricity

A

Static electricity is an imbalance of electric charges within or on the surface of a material.

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3
Q

proton

A

a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.

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4
Q

electron

A

a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.

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5
Q

neutral charge

A

A normal atom has a neutral charge with equal numbers of positive and negative particles.

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6
Q

charge separation

A

charge separation is the process of an electron in an atom or molecule, being excited to a higher energy level by the absorption of a photon and then leaving the atom or molecule to a nearby electron acceptor.

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7
Q

electrical discharge

A

electric discharge is the release and transmission of electricity in an applied electric field through a medium such as a gas.

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8
Q

van de graaff

A

Van de Graaff generator is an electrostatic generator which uses a moving belt to accumulate electric charge on a hollow metal globe on the top of an insulated column, creating very high electric potentials.

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9
Q

electrical current

A

electric current is a flow of electric charge.

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10
Q

amperes

A

(or amp) is the base unit of electric current in the International System of Units.

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11
Q

voltage

A

an electromotive force or potential difference expressed in volts.

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12
Q

circuit

A

a roughly circular line, route, or movement that starts and finishes at the same place.

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13
Q

load

A

electrical load is an electrical component or portion of a circuit that consumes (active) electric power.

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14
Q

source

A

sources are defined as the resources for electric power.

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15
Q

conductor

A

a conductor is an object or type of material that allows the flow of an electrical current in one or more directions.

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16
Q

potential difference

A

the difference of electrical potential between two points.

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17
Q

volt

A

volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force.

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18
Q

voltmeter

A

an instrument for measuring electric potential in volts.

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19
Q

insulators

A

Insulators are used to protect us from the dangerous effects of electricity flowing through conductors. (wood, and rubber)

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20
Q

3 prong plug

A

three-prong plug is an electrical connector that ensures proper grounding of the electrical circuit with the connected device.

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21
Q

fuse

A

provide (a circuit or electrical appliance) with a fuse

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22
Q

circuit breaker

A

an automatic device for stopping the flow of current in an electric circuit as a safety measure.

23
Q

circuit breaker

A

an automatic device for stopping the flow of current in an electric circuit as a safety measure.

24
Q

electrochemical cell

A

An electrochemical cell is a device capable of either generating electrical energy from chemical reactions or facilitating chemical reactions through the introduction of electrical energy.

25
Q

dry cell

A

an electric cell in which the electrolyte is absorbed in a solid to form a paste, preventing spillage.

26
Q

electrolyte

A

A substance that dissociates into ions in solution acquires the capacity to conduct electricity.

27
Q

ion

A

an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

28
Q

electrode

A

a conductor through which electricity enters or leaves an object, substance, or region.

29
Q

wet cells

A

a primary electric cell in which the electrolyte is a liquid.

30
Q

primary cell

A

an electric cell that produces current by an irreversible chemical reaction.

31
Q

rechargeable cell

A

A rechargeable battery is an energy storage device that can be charged again after being discharged by applying DC current to its terminals

32
Q

secondary cell

A

secondary cell, or accumulator is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use.

33
Q

battery

A

a container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power.

34
Q

electrolysis

A

chemical decomposition produced by passing an electric current through a liquid or solution containing ions.

35
Q

electrochemistry

A

Electrochemistry is the study of chemical processes that cause electrons to move. This movement of electrons is called electricity, which can be generated by movements of electrons from one element to another in a reaction known as an oxidation-reduction

36
Q

electroplating

A

coat (a metal object) by electrolytic deposition with chromium, silver, or another metal.

37
Q

superconductors

A

a substance capable of becoming superconducting at sufficiently low temperatures.

38
Q

resistor

A

a device having a designed resistance to the passage of an electric current.

39
Q

resistance

A

he ability not to be affected by something, especially adversely.

40
Q

ohms

A

the SI unit of electrical resistance, expressing the resistance in a circuit transmitting a current of one ampere when subjected to a potential difference of one volt.

41
Q

variable resistor

A

An electronic component that is used to vary the amount of current that flows through a circuit.

42
Q

rheostat

A

A rheostat is a variable resistor which is used to control current. They are able to vary the resistance in a circuit without interruption

43
Q

ohm’s law

A

The constant of proportionality is called the “resistance”, R. Ohm’s Law is given by: V = I R where V is the potential difference between two points which include a resistance R.

44
Q

voltage drop

A

Voltage drop is defined as the amount of voltage loss that occurs through all or part of a circuit due to impedance.

45
Q

millivoltmeter

A

A voltmeter is an instrument used for measuring electrical potential difference between two points in an electric circuit. … Portable instruments, usually equipped to also measure current and resistance in the form of a multimeter, are standard test instruments used in electrical and electronics work

46
Q

ammeters

A

an instrument for measuring electric current in amperes

47
Q

galvanometers

A

A galvanometer works as an actuator, by producing a rotary deflection (of a “pointer”), in response to electric current flowing through a coil in a constant magnetic field.

48
Q

multimeters

A

an instrument designed to measure electric current, voltage, and usually resistance, typically over several ranges of value.

49
Q

schematic diagram

A

A schematic, or schematic diagram, is a representation of the elements of a system using abstract, graphic symbols rather than realistic pictures.

50
Q

series circuit

A

A series circuit is a closed circuit in which the current follows one path,

51
Q

parallel circuit

A

A parallel circuit is a closed circuit in which the current divides into two or more paths before recombining to complete the circuit.

52
Q

transistor

A

a semiconductor device with three connections, capable of amplification in addition to rectification.

53
Q

microcircuits

integrated circuits

A

is a miniaturized electronic circuit constructed of individual devices, such as semiconductor devices

Electricity unit 1 (2 decks)

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