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Physics > Electricity > Flashcards

Electricity Flashcards

1
Q

Live colour

A

brown

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2
Q

neutral colour

A

blue

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3
Q

Earth colour

A

green yellow

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4
Q

UK mains voltage supply is

A

230V a.c at a frequency of 50Hz

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5
Q

measured in

A

voltz

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6
Q

How is the electricity around a home delivered?

loc

A

ring main

1

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7
Q

ring main consists of

A

3 wires

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8
Q

wire completes the circuit

A

Neutral

Return wire

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9
Q

wire is a low resistance connection

A

Earth

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10
Q

wire provides the path along which the electricity energy from the power station travels

A

Live

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11
Q

Plastic in con

A

insulator

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12
Q

metal in con

A

conductor

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13
Q

Which path will current always take?

A

least resistance

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14
Q

volts named after

A

Alessandro Volta

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15
Q

Invented the electric battery

A

Volta

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16
Q

Volta discovered which gas

A

Methane

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17
Q

type of cables hazard

A

Frayed cables

18
Q

types of plugs a hazard

A

Damaged plugs

19
Q

Voltmeter measures

A

electrical potential

20
Q

Liquid hazard for electricity

A

Water around socket, as water is a good conductor

21
Q

What is a fuse

A

safety device that prevents electrical shock and fires.

22
Q

Symbol of fuse

A

fuse

23
Q

current is always travelling in the same direction

A

Direct current

24
Q

AC

A

flow of electricity is constantly changing direction

25
Q

How do you work our power?

A

power = voltage x current
W = V x A
P=IV
energy /time

26
Q

Why are circuit breakers better than fuses?

A

Can easily be reset by flicking a switch so are more convenient

27
Q

Circuit breaker loc

A

5

28
Q

How do you wire a plug correctly?

A

a

29
Q

Plug picture

A

picture

30
Q

What do electrical appliances do

A

Transfer electricity

31
Q

What is voltage

A

The driving force
that pushes the current around,
like an electrical pressure

32
Q

What happens if you increase the voltage?

A

More current will flow

33
Q

Another name for voltage

A

potential difference

34
Q

wire connected to national grid

A

live

35
Q

how I think get electricity

A

atmospheric

36
Q

create heat

A

pot candle

37
Q

Light bulb inventor

A

Edison

38
Q

What is electricity

A

physical phenomena
associated with the presence and motion of matter
that has a property of electric charge

39
Q

Energy measured in

A

watt or joule

40
Q

Why need electricity

A

Heat, compliances

41
Q

why keep knowledge

A

PROFIT keep us poor

Physics (21 decks)

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