Resistance formula: R = V I

R = V I is the resistance formula . Resistance is the measure of any object's opposition to the flow of electric current. A resistor is an electrical component that provides a defined amount of resistance in a circuit. Resistance is the property of materials that permits electric current to flow. Resistance obviously opposes the flow of a stream. The resistance formula (R = ρL/A) and Ohm’s Law (V = IR) are the foundations of electrical science. They explain how the resistance of a material depends on its dimensions, resistivity, and electrical properties. The voltage formula is one of three mathematical equations related to Ohm's law. It is the formula provided in the previous paragraph but rewritten so that you can calculate voltage on the basis of current and resistance , that is the voltage formula is the product of current and resistance . The equation is: V = I × R This value is measured in ...