Electricity 0.0 / 5 ? PhysicsElectricityGCSEAQA Created by: Jamie HallCreated on: 27-04-19 15:28 What is the fuse? Designed to melt and break the circuit. 1 of 13 What is the resistor? Limits the current in the circuit. 2 of 13 What is the Light Dependant Resistor? Limits the current depending on light availability. 3 of 13 What is the thermistor? Limits the current depending on a change in temperature. 4 of 13 What is current? Is the flow of electrical charge. 5 of 13 What is voltage? A measure of the difference in electrical energy between two points. 6 of 13 What is the relationship between current and voltage over a fixed resistor? The current and voltage are directly proportional but resistance remains the same. 7 of 13 What is the relationship between voltage and current over a filament lamp? The voltage and current increase but not proportionally. The resistance increases. 8 of 13 Explain the required practical with a length of wire? The resistance is directly proportional to the length of the wire. This is because there are more atoms for the current to collide with. 9 of 13 What is the relationship between voltage and current over a diode? Voltage and current increase but not directly proportional due to the zeros. 10 of 13 Explain current, voltage and resistance in a series circuit? • The current is the same in each component • The voltage is shared between components • The resistance is the sum of resistors 11 of 13 Explain current, voltage and resistance in a parallel circuit? • The current is shared between components • The voltage is the same in each component • The resistance is less than the lowest resistor 12 of 13 What is charge? The size of electrical currrent 13 of 13
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