When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The best OBD-II scanners can unlock the secrets of your car, connecting to the onboard ...

Using Ohm’s Law (V=ꞮR), you can calculate the expected values for voltage, current, and resistance in a circuit. Ohm's law. V is equal to I multiplied by R, I equals V divided by R and R ...