Physics P2 5.5 Electrical energy and charge. 0.0 / 5 ? PhysicsElectricityGCSEAQA Created by: Atlanta and JacobCreated on: 14-10-16 20:31 What is an electric current? The rate of flow of charge. 1 of 16 What happens when charge flows through a resistor? Energy transferred to the resistor makes it hot. 2 of 16 What is the equation that relates charge, current and time? Q = Slanted I type of symbol (look up) x t. 3 of 16 In the equation which relates charge, current and time, what is Q? The charge in coulombs (C). 4 of 16 In the equation which relates charge, current and time, what is the slanted I type of symbol? The current in amperes (A). 5 of 16 In the equation which relates charge, current and time, what is t? The time in seconds (s). 6 of 16 What happens to the components in a circuit when a charge flows and what does this mean for appliances? When a charge flows in a circuit the components will heat up. This means that most electrical appliances have vents to keep them cool. 7 of 16 When a charge flows through an appliance, what happens to electrical energy? It is transferred to other forms. 8 of 16 What happens to electrical energy in a resistor? It is transferred to the resistor so the resistor becomes hotter. 9 of 16 What equation can be used to calculate the electrical energy transferred? E = V x Q. 10 of 16 In the equation to calculate the electrical energy transferred, what is E? The energy in joules (J). 11 of 16 In the equation to calculate the electrical energy transferred, what is V? The potential difference in volts (V). 12 of 16 In the equation to calculate the electrical energy transferred, what is Q? The charge in coulombs (C). 13 of 16 How much charge flows past a particular point in a circuit when a current of 2 A flows for 2 minutes? 240 C. 14 of 16 How much energy is transferred when a charge of 200 C flows through a resistor that has a potential difference across it of 230 V? 46 000 J. 15 of 16 **LOOK UP ENERGY TRANSFER IN A CIRCUIT DIAGRAM** **REMEMBER AND REVISE SYMBOLS WITHIN DIAGRAMS OF ELECTRICAL CIRCUITS** 16 of 16
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