CHAPTER 2-PHYSICS 0.0 / 5 ? Business StudiesRecruitment and retention of staffGCSECIE Created by: StudentCreated on: 14-11-18 20:33 What is potential Difference? Formula? The energy transferred per unit charge as charges more between two points in a circuit (measured in volts) FORMULA: V=IR 1 of 8 What is a thermistor? A temperature dependant resistor. if the temperature is low then the resistance is high 2 of 8 What is an LDR? Light dependant resistor which varies depending on how the light changes 3 of 8 What is a doide? A component that only allows a current to flow in one direction 4 of 8 What is the National grid? A collection of power cables that connect power to factories and houses. 5 of 8 How can the National Grids electricity increase? The higher the current the more energy is wasted and becomes less efficient 6 of 8 What do step up transformers do? Increase the potential difference, they are connected between the power situations and the national grid. 7 of 8 Energy transferred Formula? Energy Transferred= Change flow x potential difference ( E=QV) 8 of 8
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