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Electricity > overview of most of the main content > Flashcards

overview of most of the main content Flashcards

1
Q

What are atoms made up of

A

Sub-atomic particles

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2
Q

Types of subatomic particles

A

Protons
Electrons
Neutrons

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3
Q

Protons

A

Type of subatmoic particle that is postiviely charged

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4
Q

Electrons

A

Type of subatomic particle that is negatively charged

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5
Q

Neutrons

A

Type of subatomic particle that has no charge

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6
Q

What kind of energy does an atom have

A

nuclear energy

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7
Q

What is the number of protons equivalent to

A

Number of electrons

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8
Q

Electricity

A

Electricity is a result of interaction

between charges

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9
Q

How is electricity produced

A

Electricity is produced when electrons and protons are separated and
re-united.

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10
Q

How do electrons transfer from one object to another

A

2 objects are rubbed together

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11
Q

Electrical conductors

A

materials that allow for electrons to flow

easily and have low resistance

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12
Q

Electrical Insulators:

A

Materials such as rubber that don’t allow electrons to flow, can leak charge slightly and have high resistance.

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13
Q

Semi-conductors

A

are materials that are insulators in their pure form, but become
conductors when combined with small amounts of another substance eg. silicon

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14
Q

Electrostatic charge

A

Electrostatic charge is the build up of charge on an uncharged
object or surface.

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15
Q

3 rules of electrostatics

A

Like charges repel
Unlike charges attract
Charged objects attract neutral objects

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16
Q

Static discharge

A

transferring of electrons from one object to another

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17
Q

What causes sparks?

A

sparks happen when there is enough force to move electrons quickly across a gap.

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18
Q

How does an atom get a positive charge

A

when electrons get knocked or pulled away from an atom

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19
Q

How is the flow of electrons created

A

When electrons break free and get attached to another atom

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20
Q

Current(electric current/current electricty)

A

Movement of electrons through a wire

21
Q

Electrical energy

A

energy that is caused

by moving electric charges.

22
Q

Electric circuits

A

are the pathway travelled by electrical energy

23
Q

energy source/power supply

A

pushes electrons around the circuit and provides the electrical energy eg. battery

24
Q

energy user/load/resistor

A

converts electrical energy into other useful forms of energy eg. light globe

25
Q

A CONDUCTING PATH

A

allows electrons to flow around the circuit eg. wires

26
Q

what unit is current measured in

A

Current is measured as ampere

27
Q

Ammetere

A

Ammeters measure the amount of
electrons that flow through a circuit per second

measures current

28
Q

Voltage

A

Voltage is a measure of the amount of forceneeded to move electrons in
the circuit.

29
Q

What intstrument is current measured with

A

ammetre

30
Q

What is a series circuit like

A

In a series circuit, the components are connected one after

another along a single conducting pathway.

31
Q

What is a parallel circuit like

A 
In a parallel circuit each
component is separately
connected to the energy source.
-componets arranged parallel from eachtoher
-2 pathways
32
Q

What is a parallel circuit like

A 
In a parallel circuit each
component is separately
connected to the energy source.
-componets arranged parallel from eachtoher
-2 pathways
33
Q

summary of series circuit

A

one pathway
voltage shared
current same

34
Q

summary of parelle circuit

A

2 pathways
voltage same
current shared

35
Q

What instrument is voltage measrued with

A

voltmeter

36
Q

Resistance

A

Is a measure of how difficult it is for electrons to

move through an object.

37
Q

What is resistance measured in

A

OHM

38
Q

What instrument is resistance measured with

A

multimetre

39
Q

2 types of resistors

A

variable resistors-have resistance that can be altered

fixed resistors- resistors that have fixed resistance

40
Q

How is volts made-equation

A 
V= I x R
Voltage = current X resistance
41
Q

How is current made-equation

A

I= V/R

Currnet=voltage divided by resistance

42
Q

How is resistance created-equation

A

R=V/I

resistance = voltage divided by current

43
Q

Temperature-dependent Resistors

A

devices that change their resistance when
the temperature varies, which affects the amount
of current flowing through a circuit.

44
Q

Light Dependent Resistors (LDRs)

A

use
light to change the amount of
electrical current that moves through
a circuit

45
Q

Fuse

A

a switch or wire in circuits that melts or burns when current flows too fast

46
Q

Fixed resistor

A

resistor with fixed resistance

47
Q

variable resistor

A

resistor that can alter its resistance

48
Q

direct current

A

current produec by a battery that flows in a single direction

49
Q

alternating current

A

type of current that periodically reverses its direction

Electricity (10 decks)

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