1. What Is Ohm's Law?

Ohm's Law states that the voltage across a conductor is directly proportional to the current flowing through it, with resistance being the constant of proportionality. It's a fundamental principle in electrical engineering and physics.

2. How Does the Calculator Work?

The calculator uses the Ohm's Law equation:

Where:

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

Explanation: The equation shows that voltage equals the product of current and resistance in an electrical circuit.

3. Importance of Voltage Calculation

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

4. Using the Calculator

Tips: Enter current in amperes and resistance in ohms. Both values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What are the units for voltage, current, and resistance?
A: Voltage is measured in volts (V), current in amperes (A), and resistance in ohms (Ω).

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

Q3: What if I know voltage and want to find current or resistance?
A: You can rearrange the equation: \( I = V/R \) or \( R = V/I \).

Q4: Does Ohm's Law apply to all materials?
A: Ohm's Law applies to ohmic materials. Some materials like semiconductors are non-ohmic and don't follow this linear relationship.

Q5: Why is voltage important in electrical systems?
A: Voltage is the "pressure" that pushes electrical current through a circuit. Proper voltage levels are crucial for device operation and safety.