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Electricity

Revision Questions for Electricity

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 Electricity - Resistance 28 What unit is Resistance measured in? Answer 29 What is Resistance a measure of? Answer 30 Which Equation connects Resistance, Current and Voltage? Answer 31 Draw the Graph of Current against Voltage for a Resistor. Answer 32 Draw the Graph of Current against Voltage for a Light Bulb. Answer 33 Draw the Graph of Current against Voltage for a Thermistor. Answer 34 What does a Resistor do? Answer 35 What is the Circuit Symbol for a Resistor? Answer 36 What is the Circuit Symbol for a Variable Resistor? Answer 37 Draw the Circuit you would use to calculate the Resistance of a Resistor. Answer 38 What is a Component? Answer 39 Draw a Test Circuit for a Component. Answer 40 How does the Resistance of a Wire depend on its Material? Answer 41 How does the Resistance of a Wire depend on its Length? Answer 42 How does the Resistance of a Wire depend on its Thickness? Answer 43 How does the Resistance of a Wire depend on its Temperature? Answer

 Electricity - Series Circuits 44 Draw a Circuit with three Resistors connected in Series. Answer 45 How does Current change for Components in a Series Circuit? Answer 46 How does Voltage change for Components in a Series Circuit? Answer 47 How do you calculate the Total Resistance for Components in a Series Circuit? Answer 48 How do you calculate the Voltage for Components in a Series Circuit? Answer 49 When More Lamps are connected in Series, do they get Dimmer or Brighter? Answer 50 If one Lamp Breaks in a Series Circuit, will the others stay On or go Out? Answer

 Electricity - Parallel Circuits 51 Draw a Circuit with three Resistors connected in Parallel. Answer 52 How does Current change for Components in a Parallel Circuit? Answer 53 How do you calculate the Current in each Branch of a Parallel Circuit? Answer 54 How do you calculate the Total Current for Components in a Parallel Circuit? Answer 55 How does Voltage change for Components in a Parallel Circuit? Answer 56 How do you calculate the Total Resistance for Components in a Parallel Circuit? Answer 57 Draw a Circuit with three Lamps connected in Parallel. Answer 58 How can you Switch each Lamp On or Off without affecting the other Lamps? Answer 59 What is the Circuit Symbol for an Open Switch? Answer 60 What is the Circuit Symbol for a Closed Switch? Answer

 Electricity - Diode - LDR - Thermistor 61 What does a Diode do? Answer 62 Draw the Circuit Symbol for a Diode. Answer 63 Draw the Graph of Current against Voltage for a Diode. Answer 64 What does LDR stand for? Answer 65 What is the Circuit Symbol for a LDR? Answer 66 How does Resistance change with Light Intensity for a LDR? Answer 67 Give one Use for a LDR. Answer 68 What is a Thermistor? Answer 69 What is the Circuit Symbol for a Thermistor? Answer 70 How does Resistance change with Temperature for a Thermistor? Answer 71 Give one Use for a Thermistor. Answer