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 Ohm's Law equation:

Where:

• \( V \) — Voltage (in Volts)
• \( I \) — Current (in Amperes)
• \( R \) — Resistance (in Ohms)

Explanation: The voltage across a resistor can be calculated by multiplying the current flowing through it by its resistance value.

3. Importance of Voltage Calculation

Details: Calculating voltage is essential for designing electrical circuits, selecting appropriate components, and ensuring safe operation of electronic devices.

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 if I know voltage and want to find current?
A: You can rearrange the formula: \( I = V / R \). Use our current calculator for this purpose.

Q2: 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.

Q3: What are typical voltage values in circuits?
A: Common voltages range from 1.5V (batteries) to 120V/240V (household) to thousands of volts in power transmission.

Q4: How accurate is this calculation?
A: The calculation is mathematically precise, but real-world factors like temperature may affect actual values.

Q5: Can I use this for AC circuits?
A: For AC circuits with purely resistive loads, yes. For reactive components, you'll need to consider impedance.