Physics Revision 0.0 / 5 ? PhysicsElectricityGCSEAQA Created by: charlottehorneCreated on: 18-03-18 09:51 National Grid Electricity that is supplied to consumers at a very high voltage to reduce energy loss during transmission. 1 of 8 Ohm's Law When current flows through a resistor at a constant temperature and is directly proportional to the voltage. 2 of 8 Thermistors Thermistors resistance decreases as the temperature increases. 3 of 8 LDR's Light-dependent resistors' resistance decreases as the light intensity increases. 4 of 8 Live Wire A live wire is brown and carries a current that alternates between positive and negative voltages. 5 of 8 Earth Wire An earth wire is green and is a safety wire that's needed to make it safer to touch if the appliance becomes faulty. 6 of 8 Neutral Wire A neutral wire completes the circuit and keeps the voltage of the plug at zero. 7 of 8 Fuse A safety device which breaks the circuit if the current is too high-contains a thin wire that melts. 8 of 8
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