Building static charge

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  #1  
Old 01-12-11, 10:53 AM
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Question Building static charge

Hi,

I was trying to do a little experiment myself, and I was wondering how I can build up static charge on an metal rod.

I was wondering if I could connect a variable voltage DC power supply to a metal wire and cause static charge to build up on the wire.

I am trying to do something like, but not very similar to this:
YouTube - Superhydrophobic Surface

Thanks for all the help in advance!
 
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Old 01-12-11, 11:03 AM
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Traditionally you rub it with wool IIRC.
 
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Old 01-12-11, 11:12 AM
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Welcome to the Forums....

I always thought a silk cloth would do it?

Connecting a power supply to each end of a wire will blow the supply...and wouldn't build up a charge anyway.
 
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Old 01-12-11, 11:47 AM
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Is there a way to precisely control the amount of charge there would be on it?

I've always thought of using a van der graaff generator, but I don't want to invest so much money into it.
 
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Old 01-12-11, 05:16 PM
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Originally Posted by Gunguy45 View Post
Welcome to the Forums....

I always thought a silk cloth would do it?

Connecting a power supply to each end of a wire will blow the supply...and wouldn't build up a charge anyway.
I recall the silk used with a glass rod. You are not likely to "charge" a conductor by rubbing it. Nor can you "connect" the conductor to a charged non-conductor like wool, glass, or silk to transfer the charge.

What you can do is conduct an excess charge from another conductive surface. The Van de graaf is tradionally used for this experiment. It essentially "rubs" a non-conductor's electrons onto a sphere (conductive).
 
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