Re: Relationship between volts and a coil?

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#501

From: 3T39
Date: Mon, 25 Jul 2005 17:08

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Hello, alitonto!
You wrote  on 24 Jul 2005 20:48:48 -0700:

 a> Just a quick question.
 a> Please I need clarification on this:
 a> Would a voltage of say 12volts running through a coil of 10 uh be lower
 a> after the coil?.
 a> Does a coil infact drop the voltage?
 a> Thanks
 a> Al


You should really study the difference in behaviour between DC and AC to 
properly understand the effect you are trying to measure. As previous 
posters have pointed out the DC resistance of such a coil is so low that a 
simple multimeter is unlikely to provide a sensible reading as it is using 
DC. The resistance you have "measured" is likely to mostly be the contact 
resistance of the probes. To answer your question though, the DC volts 
before and after the coil will be pretty well the same. The coil only 
inteferes with the voltage for a very brief time, as the magnetic field 
builds up around the coil. An inductive component like this, is an AC 
animal.

With best regards, 3T39.  E-mail: rubbishrat@hotmail.com

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From: "3T39" <rubbishrat@hotmail.com>
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Subject: Re: Relationship between volts and a coil?
Date: Mon, 25 Jul 2005 18:08:37 +0100
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