Ohms law formula helps to calculate voltage, current and resistance. Ohms law states that the current flowing in an electric circuit is directly proportional to the applied voltage and inversely proportional to the resistance of the material. Where v voltage in volts i current in amps r resistance in ohms this is called ohms law. What is ohms law formula equation electronics notes. Watts law to the ohms law chart from a prior lesson and will show how to use this new ohms law chart.
By lumping ohms law with joules law, one can easily achieve the formula for power. To help remember the formula it is possible to use a triangle with one side horizontal and the peak at the top like a pyramid. Then select the formula containing the values you know from the corresponding chart quadrant. To use the chart, from the center circle, select the value you need to find, i amps, r ohms, e volts or p watts. R volts divided by the current 2 volts divided by 2 amperes 1 ohm sometimes its very helpful to associate these formulas visually. Below is a chart containing the formulas related to ohms law.