The following is taken from Example 7.17, pg 259 of "Mathematical Statistics with Applications" by John E. Freund, 7th edition.

Suppose the resistance in a simple circuit varies randomly in response to environmental conditions. To determine the effect of this variation on the current flowing through the circuit an experiment was performed in which the resistance (R) was varied at random on the interval 0 < R <= A and the ensuing voltage (E) was measured. Find the distribution of the random variable I, the current flowing through the circuit.

All I can say, is that I hope never to run into such a circuit!