Electricity unit

Question 1

electrical energy

Answer 1

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

Question 2

static electricity

Answer 2

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

Question 3

proton

Answer 3

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.

Question 4

electron

Answer 4

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

Question 5

neutral charge

Answer 5

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

Question 6

charge separation

Answer 6

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.

Question 7

electrical discharge

Answer 7

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

Question 8

van de graaff

Answer 8

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.

Question 9

electrical current

Answer 9

electric current is a flow of electric charge.

Question 10

amperes

Answer 10

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

Question 11

voltage

Answer 11

an electromotive force or potential difference expressed in volts.

Question 12

circuit

Answer 12

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

Question 13

load

Answer 13

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

Question 14

source

Answer 14

sources are defined as the resources for electric power.

Question 15

conductor

Answer 15

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

Question 16

potential difference

Answer 16

the difference of electrical potential between two points.

Question 17

volt

Answer 17

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

Question 18

voltmeter

Answer 18

an instrument for measuring electric potential in volts.

Question 19

insulators

Answer 19

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

Question 20

3 prong plug

Answer 20

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

Question 21

fuse

Answer 21

provide (a circuit or electrical appliance) with a fuse

Question 22

circuit breaker

Answer 22

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

Question 23

electrochemical cell

Answer 23

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

Question 24

dry cell

Answer 24

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

Question 25

electrolyte

Answer 25

a liquid or gel that contains ions and can be decomposed by electrolysis. (the stuff in a battery)

Question 26

ion

Answer 26

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

Question 27

electrode

Answer 27

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

Question 28

wet cells

Answer 28

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

Question 29

primary cell

Answer 29

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

Question 30

rechargeable cell

Answer 30

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.

Question 31

secondary cell

Answer 31

A rechargeable electric cell that converts chemical energy into electrical energy by a reversible chemical reaction.

Question 32

battery

Answer 32

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

Question 33

electrolysis

Answer 33

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

Question 34

electrochemistry

Answer 34

the branch of chemistry that deals with the relations between electrical and chemical phenomena.

Question 35

electroplating

Answer 35

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

Question 36

SECTION 2------>

Answer 36

technologies can be used to transfer and control electrical energy

Question 37

superconductors

Answer 37

a substance capable of becoming superconducting at sufficiently low temperatures.

Question 38

resistor

Answer 38

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

Question 39

resistance

Answer 39

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

Question 40

ohms

Answer 40

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

Question 41

variable resistor

Answer 41

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

Question 42

rheostat

Answer 42

an electrical instrument used to control a current by varying the resistance.

Question 43

ohm's law

Answer 43

The potential difference (voltage) across an ideal conductor is proportional to the current through it. The constant of proportionality is called the "resistance", R.

Question 44

voltage drop

Answer 44

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

Question 45

millivoltmeter

Answer 45

is an instrument used for measuring electrical potential difference between two points in an electric circuit.

Question 46

ammeters

Answer 46

an instrument for measuring electric current in amperes.

Question 47

galvanometers

Answer 47

an instrument for detecting and measuring small electric currents.

Question 48

multimeters

Answer 48

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

Question 49

schematic diagram

Answer 49

a schematic diagram, in particular of an electric or electronic circuit.symbolic and simplified.

Question 50

series circuit

Answer 50

is a closed circuit in which the current follows one path, as opposed to a parallel circuit where the circuit is divided into two or more paths.

Question 51

parallel circuit

Answer 51

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

Question 52

transistor

Answer 52

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

Question 53

microcircuits | integrated circuits

Answer 53

a minute electric circuit, especially an integrated circuit.