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 voltage is calculated by multiplying the current by the resistance in the 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.

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 diodes are non-ohmic.

Q3: Can I calculate current if I know voltage and resistance?
A: Yes, the equation can be rearranged as I = V/R.

Q4: What's the difference between AC and DC in Ohm's Law?
A: Ohm's Law applies to both, but for AC you may need to consider impedance (which includes resistance and reactance).

Q5: How accurate is this calculator?
A: It provides theoretical values based on ideal conditions. Real-world factors like temperature may affect actual values.