From HeatSpring.com PV Boot Camp Discussion Board
Q: I understand that resistance is a constant since it is tied to a material's properties, but you said that Ohms Law measures voltage drop or loss and I don't see that in the law. A: Ohm's law states: V = I x R The V is going to be the voltage drop and not the system voltage. Example: If we have 2A, a 3 Ohm wire and a 100V system, then: Vdrop = I x R Vdrop = 2A x 3 Ohms = 6 Volts Then if we want to figure out voltage drop percentage: 6 volts of voltage drop / 100V system = 6% voltage drop. Let me know if you need more. Thanks, Sean |

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