1. What is Ohm's Equation?

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. It is a fundamental principle in electrical engineering and physics.

2. How Does the Calculator Work?

The calculator uses Ohm's equation:

Where:

• \( R \) — Resistance (Ω)
• \( V \) — Voltage (V)
• \( I \) — Current (A)

Explanation: The equation calculates electrical resistance by dividing voltage by current.

3. Importance of Resistance Calculation

Details: Calculating resistance is essential for designing electrical circuits, troubleshooting electrical problems, and ensuring proper functioning of electronic devices.

4. Using the Calculator

Tips: Enter voltage in volts (V) and current in amperes (A). Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the unit of resistance?
A: The unit of resistance is the ohm (Ω).

Q2: Can Ohm's law be applied to all materials?
A: Ohm's law applies to ohmic materials where resistance remains constant regardless of voltage and current. It does not apply to non-ohmic materials like diodes and transistors.

Q3: What happens if current is zero?
A: If current is zero, the resistance calculation becomes undefined as division by zero is not possible.

Q4: How accurate is this calculation?
A: The calculation is mathematically precise based on the input values, assuming the circuit follows Ohm's law.

Q5: Can I calculate voltage or current using this formula?
A: Yes, the formula can be rearranged to calculate voltage (V = I × R) or current (I = V / R).