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power supply and sensor

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A power supply outputs 24VDC at 3A. I have a sensor that needs 24VDC at 100mA. If I do ohms law V/I = R I then do 24VDC/100mA and get 240 for resistance. My wire will go from the supply terminal block through a series wire then a resistor to my sensor. Will this method at 240 ohms reduce my current to 100mA from 3A. If not how calculate? I do not know sensor resistance if needed?

2) Now, does this method also work for V/R = I in this same scenario?

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It examines the current and voltage relationship between a power supply and a sensor. The solution is detailed and was rated '5/5' by the student who posted the question originally.

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OK, I have a power supply that outputs 24VDC at 3A. I have a sensor that needs 24VDC at 100mA. If I do ohms law V/I = R I then do 24VDC/100mA and get 240 for resistance. My wire will go from the supply ...

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