2023 UPDATED AQA A Level Physics Paper 1 latest complete verified solution
Current - Rate of flow of charge Coulomb - The amount of charge passing a point when a current of 1A flows for 1s Potential difference - The work done per unit charge in moving a small point positive charge between two points Threshold Voltage for a Diode - The voltage at which a current will begin to flow at, assumed to be +0.6V if not stated Reverse Bias - When very little currency can flow in the reverse direction of a diode Variable Resistor - Can be used to change the current through a circuit can also be called a rheostat NTC Thermistor - (A type of semiconductor) that has decreasing resistance when its temperature increases - negative temperature coefficient Transitional Temperature - The critical temperature at and below which a superconductor has zero resistivity Semiconductor - A group of materials which conduct electricity (not as well as metals), when their temperature rises they can release more charge carriers and their resistance decreases Resistance - The ratio of a components potential difference to its current Volt - The potential difference across a component when 1 joule of energy is used to move a coulomb of charge through a component
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