Physics 2 - Electric Circuits (AS) 0.0 / 5 ? PhysicsD.C. ElectricityASEdexcel Created by: Alexander HydeCreated on: 31-03-22 19:16 What is the definition of a current? The rate of flow of charge. Using the water analogy, it would be how much water is flowing through a pipe at a given time. Measured in Amps (A) 1 of 7 What is the equation for current? I = q/t I = Current (A), q = charge (C), t = time (s) 2 of 7 How do you measure current? Using an ammeter. This should be connected in series with the component you are measuring. 3 of 7 What is the definition for potential difference? The work done per unit of charge moved. Measured in volts (V). Using the water analogy, it is like the force that is moving the water. 4 of 7 What is the equation for potential difference? V = W/Q V = potential difference (V), W = Work done (J), Q = Charge (C) 5 of 7 How do you measure potential difference? Using a voltmeter. The voltmeter must be connected in parallel with the components being investigated. 6 of 7 What is the definition of resistance? How much current 7 of 7
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