3943695
Descrição
Mapa Mental por Marcus Wells, atualizado more than 1 year ago
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Criado por Marcus Wells
aproximadamente 9 anos atrás
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Current and Potential Difference
(Physics Unit 2)
- Current
- The flow of electric charge round the circuit
- Charge is measured in coulombs
- Charge is measured in coulombs
- Measured in amps (A)
- Current = Charge / Time
- I = Q / T
- I = Q / T
- The flow of electric charge round the circuit
- Potential difference
- Same as voltage
- Measured in volts (V)
- The force that pushes the current round
- P.D = Work done / Charge
- V = W / Q
- V = W / Q
- Same as voltage
- Resistance
- Anything in the circuit which slows the flow down.
- Measured in ohms
- Anything in the circuit which slows the flow down.
- The greater the resistance across a component, the smaller the current that flows
- (For a given potential difference across the component)
- (For a given potential difference across the component)
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