Thread: Photo, is this a diode or a resistor? temperature gauge 1975 300D
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Old 08-26-2011, 10:10 PM
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1975300D 1975300D is offline
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Location: Newmarket, Ontario
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Ashedd, power in watts is the square of the voltage divided by the resistance.

P = Vē/R

So, if the voltage say is 10, and the resistance was say, 65 ohms - like the fuel gauge - then the wattage would be 1.5. Thus, for the wattage to be 5, then the resistance would have to be 20 ohms.

Does this makes sense?
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