AQA A level Physics Paper 1 REAL EXAM
Study online at https://quizlet.com/_hm0lev
Current Rate of flow of charge
The amount of charge passing a point
Coulomb
when a current of 1A flows for 1s
The work done per unit charge in moving
Potential difference a small point positive charge between
two points
The voltage at which a current will begin
Threshold Voltage for a Diode to flow at, assumed to be +0.6V if not
stated
When very little currency can flow in the
Reverse Bias
reverse direction of a diode
Can be used to change the current
Variable Resistor through a circuit can also be called a
rheostat
(A type of semiconductor) that has de-
creasing resistance when its tempera-
NTC Thermistor
ture increases - negative temperature
coefficient
The critical temperature at and below
Transitional Temperature which a superconductor has zero resis-
tivity
A group of materials which conduct elec-
tricity (not as well as metals), when their
Semiconductor temperature rises they can release more
charge carriers and their resistance de-
creases
The ratio of a components potential dif-
Resistance
ference to its current
The potential difference across a com-
ponent when 1 joule of energy is used
Volt
to move a coulomb of charge through a
component
Provided that the physical conditions re-
Ohm's Law
main the same, the current through an
, AQA A level Physics Paper 1 REAL EXAM
Study online at https://quizlet.com/_hm0lev
ohmic conductor is directly proportional
to the potential difference across it
A material that follows Ohm's law when
Ohmic conductor
physical components remain the same
Components made from semi conduc-
Diodes tors that only allow current to flow in one
direction
The resistance of a 1m length of wire with
Resistivity
a 1m^2 cross sectional area
A material that has zero resistivity when
Superconductor
it is cooled below its critical temperature
The temperature below which a material
Critical Temperature will have zero resistance and will become
a superconductor
Power The rate of transfer of energy
The work done in moving a unit charge
EMF
through a battery
Work done per unit charge in overcoming
Lost Volts
the internal resistance within a battery
The potential difference between the two
Terminal PD
terminals of the power supply
A circuit with a constant voltage source
and more than one resistor connected in
Potential Divider
series that can be used to vary the output
voltage
The minimum frequency that must be in-
Threshold Frequency cident on the surface of a metal for the
emission of photoelectrons to occur
A fundamental force that causes interac-
Electromagnetic Force tions between charged particules. Virtual
photons are the exchange particles
A fundamental force which causes at-
Gravitational Force traction between objects with a force pro-
portional to their mass
Strong Nuclear Force
Study online at https://quizlet.com/_hm0lev
Current Rate of flow of charge
The amount of charge passing a point
Coulomb
when a current of 1A flows for 1s
The work done per unit charge in moving
Potential difference a small point positive charge between
two points
The voltage at which a current will begin
Threshold Voltage for a Diode to flow at, assumed to be +0.6V if not
stated
When very little currency can flow in the
Reverse Bias
reverse direction of a diode
Can be used to change the current
Variable Resistor through a circuit can also be called a
rheostat
(A type of semiconductor) that has de-
creasing resistance when its tempera-
NTC Thermistor
ture increases - negative temperature
coefficient
The critical temperature at and below
Transitional Temperature which a superconductor has zero resis-
tivity
A group of materials which conduct elec-
tricity (not as well as metals), when their
Semiconductor temperature rises they can release more
charge carriers and their resistance de-
creases
The ratio of a components potential dif-
Resistance
ference to its current
The potential difference across a com-
ponent when 1 joule of energy is used
Volt
to move a coulomb of charge through a
component
Provided that the physical conditions re-
Ohm's Law
main the same, the current through an
, AQA A level Physics Paper 1 REAL EXAM
Study online at https://quizlet.com/_hm0lev
ohmic conductor is directly proportional
to the potential difference across it
A material that follows Ohm's law when
Ohmic conductor
physical components remain the same
Components made from semi conduc-
Diodes tors that only allow current to flow in one
direction
The resistance of a 1m length of wire with
Resistivity
a 1m^2 cross sectional area
A material that has zero resistivity when
Superconductor
it is cooled below its critical temperature
The temperature below which a material
Critical Temperature will have zero resistance and will become
a superconductor
Power The rate of transfer of energy
The work done in moving a unit charge
EMF
through a battery
Work done per unit charge in overcoming
Lost Volts
the internal resistance within a battery
The potential difference between the two
Terminal PD
terminals of the power supply
A circuit with a constant voltage source
and more than one resistor connected in
Potential Divider
series that can be used to vary the output
voltage
The minimum frequency that must be in-
Threshold Frequency cident on the surface of a metal for the
emission of photoelectrons to occur
A fundamental force that causes interac-
Electromagnetic Force tions between charged particules. Virtual
photons are the exchange particles
A fundamental force which causes at-
Gravitational Force traction between objects with a force pro-
portional to their mass
Strong Nuclear Force
