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Arnak
Lv 7
Arnak asked in Science & MathematicsPhysics · 1 decade ago

Potentiometer Wattage Value?

Hi,

I have a circuit that requires a pot to drop 1 volt, from 3 to 2 volts.

The current is 180ma so I believe the pot's value would be about 5.55 ohms so the nearest I assume will be 10 ohms.

But what is the wattage of the pot I require and how do I calculate it?

Is it watts = volts x amps, so that would be w = 1 x .18 = .18 watts?

Thanks for any advice

Arnak

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