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# Re: [femm] How to define the current in a circuit

- To: femm@yahoogroups.com
- Subject: Re: [femm] How to define the current in a circuit
- From: Keith Gregory <k.gregory@lboro.ac.uk>
- Date: Thu, 18 Sep 2003 14:54:17 +0100
- In-reply-to: <20030918065205.68642.qmail@web14711.mail.yahoo.com>

`It's the total current in the circuit. The same value of current on each side defined as positive on one side of the coil and negative on the other.`
`Keith.`
`At 23:52 17/09/2003 -0700, you wrote:`

> `Dear friends,`

>     I am a new comer in using FEMM3.3. When I was learning
>     the example of DCMagnet, I was a little confused about
>     the definition of current in the circuit. Due to the
>     2-D effect, we have to draw two parts for one
>     excitation coil, and we have to define same current
>     value "plus" and "minus" circuit for them. What I want
>     to know is that the value of the current should be the
>     total current or half of the total current in the
>     practical coil. Any help will be appreciated.

> `Thanks`
> `Lefu Zhang`

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- References:
  - How to define the current in a circuit
    - From: Lefu Zhang <lefu_zhang@yahoo.com>

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