OHM'S LAW

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Ohm's Law Formula Wheel Below is a formula wheel for Ohm's Law relationships between P, I, V, and R. This is essentially what the calculator does, and is just a representation of the algebraic manipulation of the equations above. To use the wheel, choose the variable to solve for in the middle of the wheel, then use the relationship for the two known variables within the cross section of the circle.

What is Ohm’s Law?

by Esma (Esendeniz Teacher)

Kadri Saman MTSO Vocational and Technical Anatolian High School

Ohm's Law&nbsp;is a formula used to calculate the relationship between voltage, current and resistance in an electrical circuit. To students of electronics, Ohm's Law (V = IR) is as fundamentally important as Einstein's Relativity equation (E = mc²) is to physicists. V = I x R When spelled out, it means&nbsp;voltage = current x resistance, or volts = amps x ohms, or V = A x Ω.

Example 1:&nbsp;Voltage (V) and resistance (R) are known.

Example 2:&nbsp;Voltage (V) and current (I) are known.

Example 3:&nbsp;Current (I) and resistance (R) are known. What is the voltage?

What is the resistance created by the lamp?

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