1. What is Electric Potential?

Electric potential (voltage) is the difference in electric potential energy between two points per unit electric charge. It's measured in volts (V) and represents the "pressure" that drives electric current through a circuit.

2. How Does the Calculator Work?

The calculator uses Ohm's Law:

Where:

• \( V \) — Electric potential (voltage) in volts (V)
• \( I \) — Electric current in amperes (A)
• \( R \) — Resistance in ohms (Ω)

Explanation: The voltage across a conductor is directly proportional to the current flowing through it, with resistance being the constant of proportionality.

3. Importance of Voltage Calculation

Details: Understanding voltage is essential for designing and analyzing electrical circuits, selecting appropriate components, and ensuring electrical safety in systems.

4. Using the Calculator

Tips: Enter current in amperes (A) and resistance in ohms (Ω). Both values must be positive numbers. The calculator will compute the voltage in volts (V).

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between voltage and current?
A: Voltage is the potential difference that causes charges to move, while current is the actual flow of electric charges.

Q2: What are typical voltage values?
A: Common voltages include 1.5V (batteries), 5V (USB), 12V (car batteries), 120V/240V (household electricity).

Q3: Does Ohm's Law apply to all materials?
A: Ohm's Law applies to "ohmic" materials where resistance is constant. Some materials (like diodes) are non-ohmic.

Q4: How does voltage relate to power?
A: Power (P) in watts is voltage times current: \( P = V \times I \).

Q5: What happens if resistance is zero?
A: In theory, voltage would be zero regardless of current (short circuit). In practice, all conductors have some resistance.