Key Stage 4
Meaning
An IV graph is a graph showing how the current (I) through a component changes with the potential difference (V) across component.
About IV Graphs
- On an IV graph the potential difference is plotted on the x-axis and the current is plotted on the y-axis.
- An IV graph can be used to identify the characteristics of an unknown electrical component. This may be useful when inventing new components.
- The resistance of an component can change with the current or the potential difference.
- The resistance of a component can be found by taking the ratio of potential difference to current at a point on the curve of an IV graph.