1. What is Ohm's Law?

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.

2. How Does the Calculator Work?

The calculator uses Ohm's Law equation:

Where:

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

Explanation: The equation shows the relationship between voltage, current, and resistance in an electrical circuit.

3. Importance of Current Calculation

Details: Calculating current is essential for circuit design, electrical safety, and proper component selection in electronic systems.

4. Using the Calculator

Tips: Enter voltage in volts and resistance in ohms. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are typical voltage values?
A: Common voltages include 1.5V (batteries), 5V (USB), 12V (automotive), 120V/240V (household).

Q2: What is a typical resistance range?
A: Resistors range from milliohms (conductors) to megaohms (insulators), with common values between 1Ω-1MΩ.

Q3: Does this work for AC circuits?
A: The basic form works for DC circuits. For AC, impedance must be considered instead of pure resistance.

Q4: What if resistance is zero?
A: This would create a short circuit with theoretically infinite current, which is dangerous in real circuits.

Q5: Can I calculate power with this?
A: Power can be calculated as P = V×I once current is known, or P = V²/R directly.