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 the constant of proportionality being the resistance. It's a fundamental principle in electrical engineering and physics.

2. How Does the Calculator Work?

The calculator uses Ohm's Law equation:

Where:

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

Explanation: The equation shows the linear relationship between voltage, 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 amps and resistance in ohms. Both values must be positive numbers. The calculator will compute the voltage in volts.

5. Frequently Asked Questions (FAQ)

Q1: What are the units for Ohm's Law?
A: Voltage is in volts (V), current in amperes (amps, 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 know voltage and want to find current?
A: You can rearrange the equation: \( I = V / R \).

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

Q5: What's the difference between voltage and current?
A: Voltage is the potential difference (like water pressure), while current is the flow of electrons (like water flow rate).