Electronics is all related to Ohm's law. This provides the relation between voltage, current, and resistance in a circuit. The law states that the current passing through a resistor is directly proportional to the applied voltage across it. In mathematical forms, it looks like this:

A simple way to remember and apply it according to either of the variables is the following triangle:

If we want to find the current, we cover **I** and we get **V** divided by **R**. The same goes for R: we cover it and we obtain V divided by I. Lastly, V will equal I multiplied ...

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