What is Ohm's Law? Understanding Voltage, Current, and Resistance

Learn the basics of Ohm's Law, the key electrical principle relating voltage, current, and resistance in circuits.

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Ohm's Law 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 formula is: V = IR, where V is voltage, I is current, and R is resistance. This fundamental principle is essential for understanding and designing electrical circuits.

FAQs & Answers

  1. What is the formula for Ohm's Law? The formula for Ohm's Law is V = IR, where V represents voltage, I is the current, and R is the resistance.
  2. How does resistance affect current in a circuit? Resistance limits the flow of current in a circuit; according to Ohm's Law, current is inversely proportional to resistance.
  3. Why is Ohm's Law important in electrical engineering? Ohm's Law is fundamental for understanding and designing electrical circuits as it relates how voltage, current, and resistance interact.