(Solved) What is voltage and how is it related to flow?

rkc4yc

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12 years ago

What is voltage and how is it related to flow?

How is voltage related to flow (measured via Galvanometer)?
Is voltage the force which moves the electrons within a circuit?
Why is the flow the same throughout the circuit, but voltage decreases?

Please no wikipedia references, tell me based on what you were taught. I've read the wiki page on volt and that doesn't really help me.

Thanks.

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smooth15

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12 years ago

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rkbrookover

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12 years ago

The voltage is a measure of 'potential' energy.

The way I first learned it was to compare water flowing down a hill with electricity.

The 'current' of electricity is the same as the 'current' of water. In electricity it's the amount of charges moving through a bit of wire in a second. In a water flow it's the amount of water moving through a bit of the stream in a second.

The 'voltage' is the potential energy of the current at a certain point.

Water flowing down a hill starts at the top of the hill, a high potential (gravitational potential in this case). As you go down the hill, potential energy is being transferred to kinetic energy of the moving water. At the bottom of the hill, the water flows past you at the same rate as it does at the middle or top, but since you're no longer as high up there's less potential energy.

Voltage is the electrical analogy of this.

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