Physics A-Level
Determining the time constant from a graph
What Determining the time constant from a graph means in Physics A-Level, as defined for AQA.
Definition of Determining the time constant from a graph
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Reference: AQA
Found by reading the time at which the value is 1/e of its starting value, or from the gradient of a graph of ln V against time, whose magnitude equals 1/RC.
Topics that use Determining the time constant from a graph
- Capacitor charge and discharge (A-level only) (AQA A-Level)
Related terms
- Area under a graph
- Capacitor charging and discharging
- Effect of larger R or C
- Exponential decay
- Exponential fall during discharge
- Gradient
- Graphical analysis of electrical circuits
- Proportionality of charge and p.d.
Using Determining the time constant from a graph in the exam
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