P2 Physics - ac, mains electricity, wiring a plug, energy transfer Flashcards Preview

Science B2 C2 P2 > P2 Physics - ac, mains electricity, wiring a plug, energy transfer > Flashcards

Flashcards in P2 Physics - ac, mains electricity, wiring a plug, energy transfer Deck (10)
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1

what is alternating current

the current consistently changes direction

2

what does the mains electricity cable contain?

2 or 3 inner wires

3

what are the three colours of wire inside a cable?

blue
brown
green/yellow striped

4

what does the blue wire mean?

neutral

5

what does the brown wire mean?

live

6

what does the green/yellow wire mean?

earth

7

what are 3 features of the plug?

there is a fuse
covered with plastic, good electrical insulators
has three pins made of brass - good conductor of electricity

8

where does each wire go?

bLue - Left
bRown - right
sTriped - top

9

what does the amount of electrical energy transfered to an appliance depend on?

power and length of time it is switched on

10

whats the equation to show the reltionship between energy transfered, power and time

energy transfered = power x time