Resistors (AQA GCSE Physics): Flashcards
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14 cards from this deck
Ohmic conductor definition
Ohmic conductor definition
If constant resistance, current is directly proportional to P.D.
Graph shape for ohmic conductor
Graph shape for ohmic conductor
Linear
Graph shape for non-ohmic components
Graph shape for non-ohmic components
Nonlinear
Effect of higher resistance on energy transfer
Effect of higher resistance on energy transfer
More energy is transferred
Ohm's Law: current and P.D. relationship
Ohm's Law: current and P.D. relationship
Directly proportional
Why resistance increases with current
Why resistance increases with current
Electrons collide more with atoms, atoms vibrate more
Thermistor resistance in hotter temperatures
Thermistor resistance in hotter temperatures
Lower
Effect of greater length on resistance
Effect of greater length on resistance
More resistance
LDR resistance with greater light intensity
LDR resistance with greater light intensity
Lower resistance
LDR resistance when it is dark
LDR resistance when it is dark
Greatest
Direction diode allows current to flow
Direction diode allows current to flow
One direction only
Diode resistance in reverse direction
Diode resistance in reverse direction
Very high resistance
LED function when current flows
LED function when current flows
Gives off light
LED energy efficiency
LED energy efficiency
Extremely energy-efficient