OCR Physics G482 module 1-3 3.0 / 5 based on 1 rating ? PhysicsASOCR Created by: Matthieu MarshallCreated on: 05-04-13 10:20 A component, the resistance of which decreases with increasing temperature. (NTC) thermistor 1 of 17 Having a low resistance and a high charge carrier density, n. Conductor 2 of 17 Direction of flow of positive charge. Conventional current 3 of 17 The amount of charge passing a point when a curent of 1A flows for 1s. Coulomb 4 of 17 A net flow of charged particles. The magnitude of the current is equal to the rate of flow of charge. Electric Current. 5 of 17 The potential energy gained by a unit charge passing through a cell or battery. Electromotive force 6 of 17 Does not easily support an electric current having a high resistance and a very low charge carrier density. Insulator 7 of 17 A unit of energy equal to 3.6x10-6 J 1kWh 8 of 17 The sum of currents entering any point in a circuit is equal to the sum of the currents leaving that point. Kirchoff's 1st Law 9 of 17 In any given loop in a circuit the sum of the EMFs is equal to the sum of potential differences. Kirchoff's 2nd Law 10 of 17 The average velocity of a charge carrier. Mean drift velocity 11 of 17 The number of free charge carriers per unit volume. number density 12 of 17 The current through a conductor is proportional to the potential difference accross it(at constant tempereature). Ohm's Law 13 of 17 The difference in electrical potential energy per unit charge between two points. Potential Difference 14 of 17 The rate of energy transfer. Power 15 of 17 =RA/l where R is the resistance, A is the cross sectional area and l is the length of a resistor resistivity 16 of 17 Having an intermediate resistance and charge carrier density, n. Semiconductor 17 of 17
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