Mnemonic device IV graph for hot and cold wire.

The following is a IV graph of a wire where hot and cold conditions are applied.

Now the question arises: How to remember his ? Although it is not so hard to remember. It is simpler than you have ever thought.

See the two lines of HOT and COLD. And remember; During cold we use to bend down and during hot we stand to be cooled. This natural phenomenon is applied here in the graph.