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 Powering a Coil

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e3nigma Posted - Oct 15 2009 : 10:33:51 AM
I have a coil that has a resistance of 250 ohms. I want to power it with 12 volts. How do I calculate how many amps are needed to power the coil? Do i use the equation: I=E/R ? Or how do i determine the power ratios needed? Thanks.

E3
2   L A T E S T    R E P L I E S    (Newest First)
Darkthero Posted - Nov 03 2009 : 06:46:59 AM
what type of coil is it. and what for
audioguru Posted - Oct 15 2009 : 2:44:12 PM
The coil will draw 12V/250ohms= 48mA. Its operating power is 12V x 48mA= 0.576W.

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