1. What is Ohm's Law Calculator?

Definition: This calculator solves for any one variable in Ohm's Law when the other two are known.

Purpose: It helps electricians, engineers, and students quickly calculate voltage, current, or resistance in electrical circuits.

2. How Does the Calculator Work?

The calculator uses Ohm's Law formula:

Where:

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

Explanation: Enter any two known values and set the third to 0 to calculate the missing value.

3. Importance of Ohm's Law

Details: Ohm's Law is fundamental for designing and analyzing electrical circuits, ensuring proper voltage, current, and resistance relationships.

4. Using the Calculator

Tips:

• To find voltage: Enter current and resistance, set voltage to 0
• To find current: Enter voltage and resistance, set current to 0
• To find resistance: Enter voltage and current, set resistance to 0

5. Frequently Asked Questions (FAQ)

Q1: What units should I use?
A: Use volts for voltage, amperes (amps) for current, and ohms for resistance.

Q2: Does this work for AC and DC circuits?
A: This calculator works for DC circuits and AC circuits with purely resistive loads.

Q3: What if I get an unexpected result?
A: Check that you've entered exactly two values and set the third to 0. All values must be positive.

Q4: Can I calculate power with this?
A: No, this calculates only voltage, current, and resistance. Power calculations require additional formulas.

Q5: Why does the calculator round to 3 decimal places?
A: Three decimal places provide sufficient precision for most practical applications while maintaining readability.