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## Main Question or Discussion Point

I'm trying to optimize pulse coils and determine power consumption.

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=

Meter: 1.03V x .43A =

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

Meter: .6V x .9A =

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

Meter: 1.12V x .42A =

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

Meter: 1.42V x .044A =

#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

Thanks!

CH

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