Component 2 - Conduction of Electricity 0.0 / 5 ? PhysicsD.C. ElectricityASWJEC Created by: martha_rose451Created on: 01-03-16 13:51 What is the law of conservation of charge? Net charge in a system remains constant (provided charges can't enter or leave). 1 of 13 What is an electrical conductor? A material through which a charge can flow. 2 of 13 What is neutralisation due to? Redistribution of free electrons . 3 of 13 What is electric current? Rate of flow of charge. 4 of 13 What is the unit of current? Amperes, Cs ^-1 5 of 13 What is the formula linking current and charge? Q = It 6 of 13 Which way is the free electron drift velocity in relation to the conventional current? It is in the opposite direction. 7 of 13 What is the charge on an electron? 1.6 x 10 ^-19 C 8 of 13 Why is current equal round a circuit? I1 = I2 = I3 because any free electrons would repel one another, and so there cannot be a build up of electrons. 9 of 13 How do you read the total charge off a current - time graph? Take the area under the graph. 10 of 13 What is the formula which, when rearranged, gives the electron drift velocity? I = nAve 11 of 13 Is charge a scalar or vector? Scalar. 12 of 13 What is an ammeter? An instrument for measuring current. 13 of 13

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