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Criado por Delvin Hayfron
mais de 7 anos atrás
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Questão | Responda |
Conductors | Have free-moving electrons capable of carrying a charge |
Main form of conductive material | Metals- Eg Copper and silver |
Insulators | Materials with fixed (unmoving) electrons that cannot conduct |
Why are metals good conductors? | The sea of delocalised electrons that hold them together, can flow freely and easily as current |
Examples of insulative materials | Many non-metals, such as: Rubber Plastic Wood |
Current | The flow of electrons/electric charge. Measured in Amperes (Amps) Unit symbol: A Equation symbol: I |
Direction of flow of electrons | Negative terminal of cell/battery to positive terminal |
Potential difference (Voltage) | Work done (energy transferred) between two points per unit charge: AKA Joules/Coulomb Unit/equation symbol: V |
Series Circuit |
A circuit with only ONE route for current flow.
All components are either ON or OFF at once
Image:
Series (binary/octet-stream)
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Current in a series circuit | The same everywhere |
Voltage in a series circuit | Is SPLIT AMONG COMPONENTS (Total = sum of all voltages) |
Parallel circuit | A circuit with MULTIPLE paths for current to flow |
Voltage in parallel | The same throughout the circuit |
Current in parallel | Total current = sum of individual branch currents |
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