Resistors (AQA GCSE Design and Technology): Flashcards
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13 cards from this deck
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Practise the cards
13 cards from this deck
What voltage acts like in a circuit
What voltage acts like in a circuit
Electrical pressure
What current represents
What current represents
Actual flow of electrical charge
What resistance does to current
What resistance does to current
Opposes the flow of current
Ohm's law formula
Ohm's law formula
V = I × R
Unit of measurement for resistance
Unit of measurement for resistance
Ohms (Ω)
Primary job of resistors
Primary job of resistors
Controlling current flow
What fixed resistors provide
What fixed resistors provide
Constant resistance value
What variable resistors allow
What variable resistors allow
Adjustment of resistance
What LDRs respond to
What LDRs respond to
Light intensity
What thermistors are sensitive to
What thermistors are sensitive to
Temperature
What first two colour bands represent
What first two colour bands represent
Significant digits of resistance value
What third colour band indicates
What third colour band indicates
Multiplier (how many zeros to add)
What fourth colour band shows
What fourth colour band shows
Tolerance (accuracy of stated value)