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Thread: Electricity and water

  1. #1 Electricity and water 
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    Afternoon all.

    First time poster.

    It is well known that when mixed with water, electricity becomes more powerful (hopefully the right terminology but if not please feel free to correct)

    my questions are as follows:

    1) What increases, voltage or amps?

    2) If an electric current is passed through a set and permanently contained volume of water, is the water altered in anyway? ie would something in the water be used up or altered that would reduce the increase in power over time or would it stay constant?

    Hope this makes sense.

    Cheers


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  3. #2  
    Bullshit Intolerant PhDemon's Avatar
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    Is it well known that water makes electricity more powerful? It can make it more dangerous as water is a better conductor than skin but it does not increase the current or voltage...

    If you pass electricity through water you can "use the water up" as it undergoes electrolysis https://en.m.wikipedia.org/wiki/Electrolysis_of_water but this is quite slow with pure water.

    You also have it the wrong way around, you have to put electricity in to water, you don't get electricity out!

    If you want to generate electricity galvanic cells (https://en.m.wikipedia.org/wiki/Galvanic cell) are your best bet, we use copper and zinc sulphates in class when we cover this.


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  4. #3  
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    Quote Originally Posted by buster906 View Post
    It is well known that when mixed with water, electricity becomes more powerful (hopefully the right terminology but if not please feel free to correct)
    Nope, it doesn't.
    1) What increases, voltage or amps?
    Neither.
    2) If an electric current is passed through a set and permanently contained volume of water, is the water altered in anyway?
    It could heat up due to resistive heating.
    The electrodes could corrode due to galvanic action and dissolve in the water.
    The water could break down into hydrogen and oxygen (electrolysis.)
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  5. #4  
    Time Lord
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    Quote Originally Posted by buster906 View Post
    It is well known that when mixed with water, electricity becomes more powerful
    It is strongly said that water and electricity are a dangerous combination. Said most impressively to small children who may carry that message in muddled form throughout their lives.
    A pong by any other name is still a pong. -williampinn
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