2.6.14 Worksheet Quick starter; Describe some uses of Resistance, measured in Investigating ohms, as the ratio of potential resistance 2.6.14; Practical Interactive activity: factors affecting difference (p.d.) to current sheet 2.6.14; Choose the factors Investigate and explain resistance Differences in resistance factors affecting which increase the Technician’s between conducting and resistance notes 2.6.14 resistance of a wire, insulating components and those which (quantitative) decrease resistance; Slideshow: Using low and high resistances: A look at some factors that affects the resistance of materials 2.6.15 Worksheet Quick starter; Describe how the Potential difference, measured Explaining circuits in volts, battery and bulb 2.6.15; Practical Interactive activity: voltage, current and using models ratings resistance are related in sheet 2.6.15; Match the scientific Resistance, measured in different circuits ideas about electric Technician’s ohms, as the ratio of Use a model to explain notes 2.6.15 circuits to the rope potential difference (p.d.) to the relationship between model analogy voltage, current and current resistance 2.6.16 Series and parallel circuits, Worksheet Quick starter; Understand how voltage Describing series currents add where and current vary in a 2.6.16; Interactive activity: and parallel series circuit branches meet and current Choose the Technician’s circuits as flow of charge Understand how voltage notes 2.6.16 statements which and current vary in a best describe series parallel circuit circuits, and those which best describe parallel circuit; Slideshow: Splitters and multi-sockets: The dangers of overloading; Video
2.6.14 Investigating factors affecting resistance Resistance, measured in ohms, as the ratio of potential difference (p.d.) to current Differences in resistance between conducting and insulating components (quantitative) Describe some uses of resistance Investigate and explain factors affecting resistance Worksheet 2.6.14; Practical sheet 2.6.14; Technician’s notes 2.6.14 Quick starter; Interactive activity: Choose the factors which increase the resistance of a wire, and those which decrease resistance; Slideshow: Using low and high resistances: A look at some factors that affects the resistance of materials 2.6.15 Explaining circuits using models Potential difference, measured in volts, battery and bulb ratings Resistance, measured in ohms, as the ratio of potential difference (p.d.) to current Describe how the voltage, current and resistance are related in different circuits Use a model to explain the relationship between voltage, current and resistance Worksheet 2.6.15; Practical sheet 2.6.15; Technician’s notes 2.6.15 Quick starter; Interactive activity: Match the scientific ideas about electric circuits to the rope model analogy 2.6.16 Describing series and parallel circuits Series and parallel circuits, currents add where branches meet and current as flow of charge Understand how voltage and current vary in a series circuit Understand how voltage and current vary in a parallel circuit Worksheet 2.6.16; Technician’s notes 2.6.16 Quick starter; Interactive activity: Choose the statements which best describe series circuits, and those which best describe parallel circuit; Slideshow: Splitters and multi-sockets: The dangers of overloading; Video