1. What is a Resistor Calculator by Voltage?

Definition: This calculator determines the resistance in ohms based on voltage and current using Ohm's Law.

Purpose: It helps electrical engineers, technicians, and hobbyists calculate the required resistance for circuits.

2. How Does the Calculator Work?

The calculator uses Ohm's Law formula:

Where:

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

Explanation: The voltage is divided by current to determine the resistance needed in a circuit.

3. Importance of Resistance Calculation

Details: Proper resistance calculation ensures circuit protection, proper current flow, and prevents component damage.

4. Using the Calculator

Tips: Enter the voltage in volts and current in amps. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is Ohm's Law?
A: Ohm's Law states that current through a conductor is directly proportional to voltage and inversely proportional to resistance.

Q2: What units should I use?
A: Use volts for voltage and amps for current to get resistance in ohms.

Q3: Can I calculate voltage if I know resistance and current?
A: Yes, using V = I × R. We may add this functionality in future versions.

Q4: What if my current is in milliamps?
A: Convert to amps first (divide by 1000) before entering the value.

Q5: Does this work for AC and DC circuits?
A: This calculator works for DC circuits. For AC, impedance calculations are more complex.