Unit 2 (Electricity) (2.1-1.21)

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The brown wire in a plug
live
1 of 26
The blue wire in a plug
neutral
2 of 26
The yellow and green wire in a plug
earth
3 of 26
a flow of charge measured in amperes
current
4 of 26
units of power
watt
5 of 26
current which continuously changes direction
alternating current
6 of 26
current which flows in one direction only
direct current
7 of 26
energy transferred per second
power
8 of 26
plastic is an electrical .......
insulator
9 of 26
a .... is a wire that melts when the current is too high
fuse
10 of 26
which wire is the fuse connected to?
live wire
11 of 26
a fuse must be ........ after it blows
replaced
12 of 26
if a device uses a current of 4 A, what fuse should be used?
fiveamps
13 of 26
A device has a power of 250 W and a voltage of 230 V. What fuse should be used?
twoamps
14 of 26
a material that allows electricity to flow through it easily
conductor
15 of 26
a kettle with a plastic case is said to have ....../..........
double insulation
16 of 26
a circuit with multiple paths for current to flow is a ........ circuit
parallel
17 of 26
a circuit where all components are connected in a single loop is a ...... circuit
series
18 of 26
a device that only allows current to flow in one direction
diode
19 of 26
a resistor that is dependent on temperature
thermistor
20 of 26
when temperature in a thermistor increases, the resistance .........
decreases
21 of 26
what does LED stand for
lightemittingdiode
22 of 26
voltage = current x ..........
resistance
23 of 26
units of resistance
ohm
24 of 26
a (voltmeter/ammeter) is connected in series
ammeter
25 of 26
a (voltmeter/ammeter) is connected in parallel
volmeter
26 of 26

Other cards in this set

Card 2

Front

The blue wire in a plug

Back

neutral

Card 3

Front

The yellow and green wire in a plug

Back

Preview of the front of card 3

Card 4

Front

a flow of charge measured in amperes

Back

Preview of the front of card 4

Card 5

Front

units of power

Back

Preview of the front of card 5
View more cards

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