I'm trying to optimize pulse coils and determine power consumption.(adsbygoogle = window.adsbygoogle || []).push({});

According to Ohm's law:

P = V2/R

where P=power / V=voltage / R=resistance

Why isn't Ohm's law providing the same results as actual meter testing??

Testing coils with 1 "C" battery: 1.5 volts

#1) 2.3 ohm coil: (1.5x1.5)/2.3=.98W

Meter: 1.03V x .43A =.44W

#2) .7 ohm coil: (1.5x1.5)/.7=3.21W

Meter: .6V x .9A =.54 watts

#3) 2.8 ohm coil: (1.5x1.5)/2.8=.80W

Meter: 1.12V x .42A =.47W

#4) 30.7 ohm coil: (1.5x1.5)/30.7 =.073W

Meter: 1.42V x .044A =.062W

#4 is the only one even CLOSE! #1 and #3 are about half projected, and #2 is off by a MILE!

I'm taking the digital mulimeter readings correctly: volts - across coil ends / amps - inserted into circuit

Why is the actual metered consumption way less than the projected consumption of Ohm's law?

Thanks!

CH

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# Power consumption of pulse coils

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