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Flashcards in Electricity Deck (24)
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1
Q

electric charge

A

A form of charge, either positive or negative, that exerts an electric force

2
Q

Negatively charged object

A

An object that has fewer electrons than protons

3
Q

Positively charged object

A

An object that has fewer electrons than protons

4
Q

static electricity

A

And imbalance of electric charge on the surface of an object

5
Q

charging by friction

A

The transfer of electrons between two neutral object made from different materials that occurs when they are rub together or come in contact (touch)

6
Q

Electrostatics series

A

A list of materials arranged in order of their tendency to gain electrons

7
Q

Charging by conduction

A

Charging an object by contact with a charged object

8
Q

grounding

A

Connecting an object to a large body, like earth, that is capable of effectively removing an electric charge that the object might have

9
Q

Conductor

A

A Material that lets electrons move easily through it

10
Q

Insulator

A

A material that does not easily allow the movement of electrons through it

11
Q

Electric discharge

A

The rapid transfer of electric change from one object to another

12
Q

Electric circuit

A

A continuous path in which electrons can flow

13
Q

Current electricity

A

The controlled flow of electrons through a conductor

14
Q

load

A

The parts of an electric circuit that converts electrical energy into other forms of energy

15
Q

Switch

A

A device in and electric circuit that controls the flow of electrons by opening or closing the circuit

16
Q

Electrical energy

A

the energy provided by the flow of electrons in an electric circuit

17
Q

Electric cell

A

A device that converts chemical energy into electrical energy

18
Q

renewable resource

A

A natural resource that is unlimited (for example energy from the sun or wind) or can be replenished by natural processes in a relevantly short period of time (for example biomass)

19
Q

Circuit

A

A way of drawing and electric circuit using standard symbols

20
Q

parallel circuit

A

The circuit in which the loads are connected by branches so there are two or more paths for the electrons to flow

21
Q

Siries circuit

A

The circuit in which the loads are connected end to end so that there is only one path for electrons to flow

22
Q

Electric current

A

A measure of the rate of electron flow past a given point in a current circuit; measured in amperes

23
Q

Ammeter

A

A device used to measure electric current

24
Q

Voltmeter

A

A device used to measure potential difference ( voltage)