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 the 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 valid (voltage > 0, resistance > 0).

5. Frequently Asked Questions (FAQ)

Q1: What if resistance is zero?
A: Resistance cannot be zero in real circuits as it would create a short circuit with theoretically infinite current.

Q2: Does this work for AC circuits?
A: This simple form works for DC circuits. For AC, impedance must be considered instead of just resistance.

Q3: What are typical current values?
A: Current varies widely - small electronics use milliamps, while household circuits typically handle 15-20 amps.

Q4: How accurate is this calculation?
A: The calculation is mathematically exact, but real-world factors like temperature and material properties affect actual current.

Q5: Can I calculate power from this?
A: Yes, power (P) can be calculated as P = V × I once you know the current.