AQA A level Physics Paper 1; Questions and Answers
100% Verified
Ohm's Law Correct Ans-Provided that the physical conditions remain the same, the current
through an ohmic conductor is directly proportional to the potential difference across it
Ohmic conductor Correct Ans-A material that follows Ohm's law when physical
components remain the same
Diodes Correct Ans-Components made from semi conductors that only allow current to
flow in one direction
Resistivity Correct Ans-The resistance of a 1m length of wire with a 1m^2 cross sectional
area
Superconductor Correct Ans-A material that has zero resistivity when it is cooled below its
critical temperature
, AQA A level Physics Paper 1; Questions and Answers
100% Verified
Critical Temperature Correct Ans-The temperature below which a material will have zero
resistance and will become a superconductor
Power Correct Ans-The rate of transfer of energy
EMF Correct Ans-The work done in moving a unit charge through a battery
Lost Volts Correct Ans-Work done per unit charge in overcoming the internal resistance
within a battery
Terminal PD Correct Ans-The potential difference between the two terminals of the power
supply
, AQA A level Physics Paper 1; Questions and Answers
100% Verified
Current Correct Ans-Rate of flow of charge
Coulomb Correct Ans-The amount of charge passing a point when a current of 1A flows for
1s
Potential difference Correct Ans-The work done per unit charge in moving a small point
positive charge between two points
Threshold Voltage for a Diode Correct Ans-The voltage at which a current will begin to flow
at, assumed to be +0.6V if not stated
Reverse Bias Correct Ans-When very little currency can flow in the reverse direction of a
diode
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