Electric current analogy

Question

What is a good analogy for there flow of an electric current? (Something other than the flow of water) and please include the potential(voltage), current, and resistance.

Answer 1

One analogy is to think of cars along an interstate. Current is the flow of the cars along the interstate and the voltage is analogous to the amount of cars on the highway. In this way, the current is directly proportional to the flow. For resistance, consider construction is blocking traffic. This resistance would have an inverse affect on the flow whereby it causes the flow of cars to be reduced.