Hi, I will have around 75 LED's all connected to +5v, each with a seperate 100 Ohm resistor. At most 28 will be lit at one time so 700mA. I was just wandering if I could put a 10k pot on the +5v to control the brightness of all the LED's. would it work out like: P = V*I P = 5 * 0.7 P = 3.5 mea…

Variable resistor watts

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