physics 0.0 / 5 ? AllScienceFunNone Created by: F.W1234Created on: 22-05-18 16:51 What is the current in a live, neutral and earth wire? Neurtal- 0V. Earth- 0V. Live- 230V 1 of 19 In ohmic conductors what is the current directly proportional to? Current is directly proportional to the potential difference across it. 2 of 19 What does the graph look like for a linear / Non-linear component? Linear- Straight through the origin. Non-linear- curved line. 3 of 19 Define conduction? Conduction- vibration of particles transferring energy to the thermal energy stores using kinetic energy. 4 of 19 Define Convection? The movement of particles with lots of energy (hot) to and area where the particles have less energy (cold). 5 of 19 What is Specific latent heat? The energy needed to change 1kg of a substance from one state to another. 6 of 19 How can you change a volume using pressure? As particles collide with the walls of a volume a pressure is exerted at a 90degree angle, this pressure can cause the volume to increase. 7 of 19 What are the most to the least types of ionising radiation? MOST- Alpha, Beta, Gamma- LEAST IONISING 8 of 19 What are the most to the least penetrating (travel long distances) types of radiation? MOST (long distance travel)- Gamma, Beta, Alpha- Least (travel shorter distances) 9 of 19 What is the most dangerous type of radiation inside the body? Alpha, as it's highly ionising but is weakly penetrating so cannot just go through the skin. 10 of 19 What is the most dangerous type of radiation outside the body? Gamma, as it's highly penetrating so can pass through the skin and potentially damage delicate organs. 11 of 19 What does nuclear fission release? 2 neutrons 12 of 19 What is the particle of alpha decay? A helium particle- 2 electrons, 2 protons, 2 neutrons. He 13 of 19 What is the particle released during beta decay? Releases a fast moving electron. 14 of 19 What happens during gamma decay? Nothing subatomic!! Lots of energy is released. 15 of 19 What is half life? The time taken for the number of radioactive nuclei in an isotope to half. 16 of 19 What happens when a polyethene rod is rubbed by a cloth. Electrons move from the duster to the rod (the rod gains). 17 of 19 What happens when a acetate rod is is rubbed by a cloth? Electrons move from the rod to the cloth (the rod loses) 18 of 19 How are voltmeters and Ammeters connected in a circuit? A Voltmeter is connected parallel to the test component. Ammeters are connected in series after or before the test component. 19 of 19
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