"A neat analogy to help understand these terms is a system of plumbing pipes. The voltage (volts) is equivalent to the water pressure, the current (amps) is equivalent to the flow rate, and the resistance (Ohms) is like the pipe size."
From 'How Stuff Works'
http://science.howstuffworks.com/environmental/energy/question501.htm
This is why amps are potentially more deadly than volts.
