Physics P2 4.2 Electric circuits. 0.0 / 5 ? PhysicsElectricityGCSEAQA Created by: Atlanta and JacobCreated on: 03-10-16 18:23 What does every component in an electric circuit have? Its own agreed circuit symbol. 1 of 18 How are the circuit symbols used? They are put together in a circuit diagram to show how the components are connected together in a circuit. 2 of 18 What is the equation used in a circuit? I = Q over t (look up). 3 of 18 In the equation used in a circuit, what is I? The current in amperes (A). 4 of 18 In the equation used in a circuit, what is Q? The charge in coulombs (C). 5 of 18 In the equation used in a circuit, what is t? The time in seconds (s). 6 of 18 In an electric circuit, what is a cell and what does it do? A cell is necessary to push electrons around a complete circuit, a battery consists of two or more cells. 7 of 18 In an electric circuit, what is a switch and what does it do? A switch enables the current in a circuit to be switched on or off. 8 of 18 In an electric circuit, what is an indicator? An indicator is designed to emit light as a signal when a current passes through it or as a light source such as a bulb. 9 of 18 In an electric circuit, what is a diode? A diode allows current through in one direction only. 10 of 18 In an electric circuit, what is a light-emitting diode (LED)? A light-emitting diode (LED) emits light when a current passes through it. 11 of 18 In an electric circuit, what is an ammeter? An ammeter is used to measure electric current. 12 of 18 In an electric circuit, what is a fixed resistor? A fixed resistor limits the current in a circuit. 13 of 18 In an electric circuit, what is a variable resistor? A variable resistor allows the current to be varied. 14 of 18 In an electric circuit, what is fuse? A fuse is designed to melt and therefore 'break' they circuit if the current through is greater than a certain amount. 15 of 18 In an electric circuit, what is heater? A heater is designed to transfer electrical energy to heat the surroundings. 16 of 18 In an electric circuit, what is a voltmeter? A voltmeter is used to measure potential difference (e.g. voltage). 17 of 18 **MAKE SURE THAT YOU CAN RECOGNISE AND DRAW ALL OF THESE CIRCUIT SYMBOLS - YOU WILL NEED TO LOOK THEM ALL UP** **USE A SHARP PENCIL AND MAKE SURE THERE ARE NO GAPS OR ODD ENDS OF WIRE SHOWN ON YOUR DIAGRAM** 18 of 18
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