Re: Finding current of xfmr w/o meter

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Crow Leader by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla-at-lists.symmetric-dot-net>

You can measure 10 amps, not 100 with a 0.1 Ohm resistor rated at 10 watts.
   p = I^2 * R
watts = amps squared times ohms
  10 = (10^2) 0.1
  10 = 100 * 0.1 

KEN 

Tesla list writes: 

> Original poster: "David Speck by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<dspeck-at-relex-dot-com> 
> 
> Matt, 
> 
> It's not entirely clear which sort of current you are trying to measure. 
> 
> If you are looking to determine how much current a particular circuit is
> drawing,
> you can measure the voltage across a low value precision resistor, say a
> 0.1 Ohm,
> which will show a drop of 0.1 volts for each amp through it.  A 10 watt
> precision
> resistor would allow you to measure up to 100 amps without burning up,
but the