1. What is Ohm's Law?

Ohm's Law describes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. It states that the current through a conductor between two points is directly proportional to the voltage across the two points.

2. How Does the Calculator Work?

The calculator uses the Ohm's Law equations:

Where:

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

Explanation: Enter any two known values to calculate the third unknown value. The calculator automatically determines which equation to use based on the provided inputs.

3. Importance of Ohm's Law

Details: Ohm's Law is fundamental for analyzing electrical circuits, designing electronic devices, and troubleshooting electrical problems. It's essential for engineers, electricians, and anyone working with electrical systems.

4. Using the Calculator

Tips: Enter any two known values (voltage, current, or resistance) and leave the field you want to calculate empty. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are the units used in Ohm's Law?
A: Voltage is measured in volts (V), current in amperes (A), and resistance in ohms (Ω).

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

Q3: What if I get a negative result?
A: The calculator only accepts positive values as physical quantities in Ohm's Law are always positive.

Q4: Can I calculate power with this?
A: While power (P = V × I) is related, this calculator focuses on the basic Ohm's Law relationships.

Q5: How precise are the calculations?
A: Results are rounded to 4 decimal places for practical use, but underlying calculations use full precision.