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Question:
I am sort of confused as to the difference between amps and volts. I know that with very few amps you can take a lot of volts (such as the 5000 volt 10 microamp power supply we have....you cannot feel anything when you hold d on). But, what are the two of them. Everyone that answers this question just seems to confuse me more! Thanks.



Replies:
Amps and volts measure totally different things. For example, particle accelerators usually have starting sections with voltages in the millions of volts, but if that section of the chamber does not have any particles to move and create a current, the "Amps" are zero. Voltage measures a "desire" for charged particles to move, while current (number of amps) measures the actual number of charged particles that are moving (per second past any point). As an analogy, imagine you are driving to the superbowl in your car. There are tens of thousands of other people out on the road too, heading in the same direction for the same reason. The "Voltage" here is the desire of all these people to get to the stadium. The "current" is the speed with which they are getting there, which could be pretty small if traffic was really bad.

Arthur Smith



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