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, component selection, and ensuring electrical safety in systems.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What are the units for each variable?
A: Current (Amperes), Voltage (Volts), Resistance (Ohms).

Q2: Does Ohm's Law apply to all materials?
A: No, it only applies to ohmic materials where resistance remains constant regardless of voltage.

Q3: What happens if resistance is zero?
A: The equation becomes undefined (division by zero), representing a short circuit scenario.

Q4: Can I use this for AC circuits?
A: The basic form applies to DC circuits. For AC, you need to consider impedance and phase angles.

Q5: How accurate is this calculation?
A: It's theoretically exact for ideal resistors at constant temperature.