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Physics
Paper 2
Topic 10 - Electricity and circuits
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Cards (75)
basic structure of an
atom
protons
and
neutrons
in the
nucleus
,
electrons
orbiting the nucleus
proton charge
+1
neutron charge
0
electron charge
-1
series circuit
components
connected in a line and have the same
current
flowing through them
parallel circuit
components
connected with different branches so
current
can flow through independently
how is a
voltmeter
connected
in
parallel
potential difference
the energy transferred per unit charge passed
how is
potential difference
/voltage measured
volts
energy transferred
charge
x
voltage
E
Q
x
V
how is an
ammeter
connected
in
series
how is
current
measured
amps
electric current
the rate of flow of
charge
currenr
in
metals
a flow of
electrons
charge
current
x
time
Q
I
x
t
charge unit
coulombs
closed circuit
includes a source of
potential difference
there will be a
current
in the circuit
where is
current
conserved in a
circuit
at a
junction
what happens if you increase
resistance
lower the
current
potential difference/voltage
current
x
resistance
V
I
x
R
resistance unit
ohms
cell
circuit symbol
battery
circuit symbol
switch
circuit symbol
voltmeter
circuit symbol
ammeter
circuit symbol
fixed
resistor
circuit symbol
variable resistor
circuit symbol
fuse
circuit symbol
lamp
circuit symbol
motor
circuit symbol
diode
circuit symbol
thermistor
circuit symbol
LDR
circuit symbol
LED
circuit symbol
resistors
in the same
series
increased
resistance
because the same
current
has to pass through each resistor
resistors
in
parallel
decreases
resistance
because the
current
has several paths to flow through
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