1. What is Ohm's Law Calculator?

Definition: This calculator computes voltage based on current and resistance using Ohm's Law.

Purpose: It helps electrical engineers, technicians, and students determine voltage in DC circuits.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V \) — Voltage (Volts)
• \( I \) — Current (Amperes)
• \( R \) — Resistance (Ohms)

Explanation: The current multiplied by resistance gives the voltage drop across a component.

3. Importance of Ohm's Law

Details: Ohm's Law is fundamental for circuit design, troubleshooting, and understanding electrical relationships.

4. Using the Calculator

Tips: Enter the current in amperes and resistance in ohms. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Does this work for AC circuits?
A: Only for purely resistive loads in AC. For reactive components, impedance must be considered.

Q2: What's a typical current value?
A: Common circuit currents range from milliamps (0.001A) to several amps in household circuits.

Q3: How accurate is this calculation?
A: It's theoretically exact for ideal resistors at constant temperature.

Q4: Can I calculate power with this?
A: Not directly, but power (P) can be calculated as P = V × I using the results.

Q5: What if I know voltage and want current?
A: Rearrange the formula: I = V/R. We can add this functionality in future versions.