Circuit Devices 0.0 / 5 ? PhysicsCircuitsGCSEAQA Created by: asho glenoCreated on: 09-04-15 11:44 A diode is made from... semiconductor material like silicon 1 of 12 It is used to... regulate the p.d. in circuits 2 of 12 It lets current flow freely in one direction... but not in the other (i.e. There is a high resistance in the opp direction) 3 of 12 A LED emits light when a current flows through it in... the forward direction 4 of 12 LED's are used for lighting more often as they use a... much smaller current than other forms 5 of 12 They indicate the presence of a... current in a circuit 6 of 12 Examples include numbers on digital clocks... traffic lights, remote controls and tv's 7 of 12 Light-dependent Resistors - in bright light, the resistance falls and in darkness... the resistance is highest 8 of 12 Can be used for automatic night lights... outdoor lighting and burglar detector 9 of 12 A thermistor is a... temperature dependent resistor 10 of 12 In hot conditions, the resistance... drops and vice versa 11 of 12 Can be used for... temperature detectors 12 of 12
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