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 in amperes (amps)
• \( V \) — Voltage in volts
• \( R \) — Resistance in ohms

Explanation: The current flowing through a circuit is equal to the voltage divided by the resistance.

3. Importance of Current Calculation

Details: Calculating current is fundamental in electrical engineering and electronics for designing circuits, selecting appropriate components, and ensuring safety.

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 the units for current?
A: Current is measured in amperes (amps), which is the SI unit for electric current.

Q2: Can I use this for AC circuits?
A: This simple form applies to DC circuits. For AC circuits, you need to consider impedance and phase angles.

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

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

Q5: What's the relationship between power and current?
A: Power (P) equals current (I) times voltage (V): P = I × V. Current is therefore P/V.