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PHYSICS GCSE
PAPER 1
ELECTRCITY
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Cards (86)
what is electric current?
a
flow
of
electrical charge
what is the unit for electric current?
ampere
,
A
what is
potential difference
?
the
driving force
that
pushes
the
charge
around (
voltage
)
what is the unit for
potential difference
?
volts
,
V
what is
resistance
?
anything that
slows
the
flow down
what is the unit for resistance?
ohms
,
Ω
what is ohm's law?
the
greater
the
resistance
across a
component
, the
smaller
the
current
that
flows
(for a
given voltage
across a
component
)
what is the
rate
of
charge
?
the
size
of the
current
what is the equation for charge flow?
charge flow
=
current × time
Q =
I ×
t
what is the diagram for a
cell
?
what is a
battery
?
a
number
of
electrical cells in series
what is the
diagram
for a
battery
?
what is a diode?
a
component
that only allows
current
to flow in one
direction
what is the diagram for a
diode
?
what is a variable resistor?
a
component
that are
altered continually
as
they work
what is the diagram for a
variable resistor
?
what is an
LED
?
a
diode
that
emits light
when it
conducts
what is the
diagram
for an
LED
?
what is a
filament lamp
?
a
common type
of
light bulb
what is the
diagram
for a
filament lamp
?
what is the
diagram
for an
open switch
?
what is the
diagram
for a
closed switch
?
what is a fuse?
a
wire
which
melts
if the
current
is too
high
what is the diagram for a
fuse
?
what is a
voltmeter
?
a
device
used to
measure voltage
what is the
diagram
for a
voltmeter
?
what is an ammeter?
a
device
used to
measure current
what is the
diagram
for an
ammeter
?
what is a
thermistor
?
a
temperature dependent resistor
what is the diagram for a
thermistor
?
what is an LDR?
a
light dependent resistor
what happens to the
resistance
as the
current
through an
ohmic
resistor
changes
?
remains constant
what happens to the resistance of a bulb as temperature of the filament increases?
the
resistance increases
what happens to the resistance of a thermistor as the temperature increases?
the
resistance decreases
what happens to the resistance of a light dependent resistor as the intensity of light increases?
the
resistance decreases
what are the rules for a series circuit?
-
I1
=
I2
=
...
-
Vtotal
=
V1 + V2 + ...
-
Rtotal
=
R1 + R2
what happens when you
add resistors
to a
series circuit
?
total resistance increases
,
total current decreases
what happens when you add resistors to a parallel circuit?
total
resistance
decreases
,
total
current
increases
what does dc stand
for
?
direct current
what is direct current?
current
that flows in
one direction
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