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 designing electrical circuits, selecting appropriate wire gauges, and ensuring safety in electrical systems.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What are typical current values in household circuits?
A: Typical household circuits in the US carry 15-20 amps at 120 volts.

Q2: Does Ohm's Law apply to all materials?
A: Ohm's Law applies to "ohmic" materials where resistance is constant. Some materials like diodes are non-ohmic.

Q3: What happens if resistance is zero?
A: In theory, current would approach infinity (short circuit). In reality, all circuits have some resistance.

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

Q5: How accurate is this calculation?
A: The calculation is mathematically precise, but real-world factors like temperature and material purity affect actual values.