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Ohm's law calculator

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Description

Ohm's Law is a fundamental formula in electrical engineering that describes the relationship between voltage, current, and resistance in an electrical circuit. The formula states that the voltage (in volts) in a circuit is equal to the product of the current (in amperes) and the resistance (in ohms). This formula is essential for understanding how electricity flows through a circuit and is used extensively in designing and troubleshooting electronic devices. By applying Ohm's Law, engineers can determine the optimal values of voltage, current, and resistance to achieve the desired performance of a circuit. Understanding and applying Ohm's Law is essential for anyone working with electrical circuits, from hobbyists to professional engineers.

Info

What is Ohm's Law?

Ohm's Law is a fundamental principle in electrical engineering that describes the relationship between voltage, current, and resistance in an electrical circuit. Simply put, Ohm's Law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points, and inversely proportional to the resistance between them.

How to calculate Ohm's Law

Ohm's Law can be expressed mathematically as:

V = IR

where:

  • V is the voltage (in volts) across the two points
  • I is the current (in amperes) flowing through the conductor
  • R is the resistance (in ohms) of the conductor between the two points

To calculate any one of these variables using Ohm's Law, simply rearrange the formula to solve for the desired variable. For example, if you know the voltage and resistance, you can use Ohm's Law to calculate the current:

I = V/R

Or, if you know the current and resistance, you can use Ohm's Law to calculate the voltage:

V = IR

Applications of Ohm's Law

Ohm's Law is a foundational principle in electrical engineering, and is used extensively in designing, analyzing, and troubleshooting electrical circuits. It is particularly useful in determining the optimal values of voltage, current, and resistance to achieve a desired level of performance in a circuit. By understanding and applying Ohm's Law, engineers can ensure that their circuits are operating efficiently and safely.