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PHYSICS
GCSE AQA Physics Atomic Structure Trilogy
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Cards (210)
What is the circuit symbol for an ammeter?
Ammeter
What is the circuit symbol for a battery?
Battery
What is the circuit symbol for a cell?
Cell
What is the circuit symbol for a diode?
Diode
What is the circuit symbol for a fuse?
Fuse
What is the circuit symbol for a lamp (bulb)?
Lamp
(
Bulb
)
What is the circuit symbol for an LDR?
LDR
What does LDR stand for?
Light Dependent Resistor
What is the circuit symbol for an LED?
LED
What is the circuit symbol for a resistor?
Resistor
What is the circuit symbol for a closed switch?
Switch
(
closed
)
What is the circuit symbol for an open switch?
Switch
(
open
)
What is the circuit symbol for a thermistor?
Thermistor
What is the circuit symbol for a variable resistor?
Variable Resistor
What is the circuit symbol for a voltmeter?
Voltmeter
For electrical charge to flow through a closed circuit the circuit must include a source of _________ __________
Potential Difference
Electric current is a flow of electrical ______
Charge
The size of an electric _______ is the rate of flow of electrical charge
current
Charge flow
,
current
and
time
are linked by the equation
charge flow
=
current x time
Unit of charge flow, Q
coulombs
,
C
Unit of current, I
amps
,
A
Unit of time, t
seconds
,
s
Current has the same value at any point in a ______ circuit
series
The current (I) through a component depends on both the __________ of the component and the potential difference (V) across the component
Resistance
(
R
)
For a given potential difference (voltage), the greater the resistance of the component the smaller the _______
current
Current, potential difference or resistance can be calculated using the equation
potential difference
=
current x resistance
Unit of potential difference, V
volts
,
V
Unit of resistance, R
ohms
, Ω
The current through an ohmic conductor (at constant temperature) is ________ ____________ to the potential difference across the resistor.
directly proportional
The resistance of components such as lamps, diodes, thermistors and LDRs is not constant; it changes with the _______ through the component
current
The resistance of a filament lamp increases as the ___________ of the filament increases
temperature
The current through a diode flows in ___ _________ only
one direction
The _____ has a very high resistance in the reverse direction
diode
The resistance of a __________ decreases as the temperature increases
thermistor
The resistance of an LDR decreases as _____ _________ increases
light intensity
An ___ can be used to switch lights on when it gets dark
LDR
A __________ can be used to switch heaters on when it gets cold
thermistor
There are two ways of joining electrical components, in series and in ________
parallel
For components connected in series there is the same _______ through each component
current
For components connected in series the total potential difference of the power supply is ______ between the components
shared
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