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electricity - Coggle Diagram
electricity
equations
power=current x potential difference
P=I x V
charge =current x time
Q=I x T
power=energy transferred/time taken
P=E/t
potential difference= current x resistance
V= I x R
energy transferred = potential difference x charge
E= V x Q
electrical safety
rubber is an insulator so the electricity can't flow through
double insulated - wire - plastic case
earth wire connected to the metal case
fuse designed to break if the current gets too high
circuit breaker does the same job as a fuse just on a bigger circuit - does not have to be replaced
current
I
amps
A
charge
Q
coulombs
C
energy
E
joules
j
resistance
R
ohms
Ω
voltage/potential difference
V
volts
v
time
t
seconds
s
power
P
watts
w
current
the rate of flow of charge, measured in amps with an ammeter
potential difference/ voltage
the difference in electrical potential energy between two points, measured in volts using a voltmeter
resistance
