1. What is a Voltage Calculator by Ohm's Law?

Definition: This calculator determines the voltage across a resistor using Ohm's Law based on current and resistance values.

Purpose: It helps electrical engineers, technicians, and students quickly calculate voltage in electrical circuits.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V \) — Voltage (volts)
• \( I \) — Current (amperes)
• \( R \) — Resistance (ohms)

Explanation: The voltage across a resistor equals the current flowing through it multiplied by its resistance.

3. Importance of Voltage Calculation

Details: Accurate voltage calculation is essential for circuit design, troubleshooting, and ensuring proper operation of electrical components.

4. Using the Calculator

Tips: Enter the current in amperes and resistance in ohms. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is Ohm's Law?
A: Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

Q2: Can I use this for AC circuits?
A: This calculator works for DC circuits. For AC circuits with reactive components, you'll need to consider impedance.

Q3: What if my resistance is zero?
A: Zero resistance would create a short circuit. The calculator requires positive resistance values.

Q4: How do I measure current and resistance?
A: Current is measured with an ammeter in series, resistance with an ohmmeter (with power off).

Q5: What are typical resistance values?
A: Resistors commonly range from a few ohms to several megaohms, depending on application.