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Ohm's Law:
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Ohm's Law is a fundamental principle in electrical engineering that describes the relationship between voltage, current, and resistance in an electrical circuit. It states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them.
The calculator uses Ohm's Law equation:
Where:
Explanation: The calculator allows you to input any two known values and will calculate the missing third value using the Ohm's Law formula.
Details: Ohm's Law is essential for designing and analyzing electrical circuits, troubleshooting electrical problems, and understanding how different components interact in electronic systems. It forms the foundation for most electrical calculations and circuit design principles.
Tips: Enter any two known values (voltage, current, or resistance) and leave the third field empty. The calculator will compute the missing value. All values must be positive numbers.
Q1: What are the units used in Ohm's Law?
A: Voltage is measured in volts (V), current in amperes (A), and resistance in ohms (Ω).
Q2: Can Ohm's Law be used for AC circuits?
A: Ohm's Law applies to both DC and AC circuits, but for AC circuits, it applies to the magnitude of voltage and current when dealing with resistive loads.
Q3: What if I have more than two values?
A: The calculator is designed to calculate one missing value. If you have all three values, you can use it to verify the relationship between them.
Q4: Are there limitations to Ohm's Law?
A: Ohm's Law applies to linear resistive circuits. It may not accurately describe the behavior of non-linear components like diodes and transistors.
Q5: Who discovered Ohm's Law?
A: Ohm's Law was formulated by German physicist Georg Simon Ohm in 1827 and published in his paper "The Galvanic Circuit Investigated Mathematically."