1. What is Ohm's Law?

Ohm's Law is a fundamental principle in electrical engineering that states the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them.

2. How Does the Calculator Work?

The calculator uses Ohm's Law equation:

Where:

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

Explanation: The equation shows the relationship between voltage, current, and resistance in an electrical circuit.

3. Importance of Current Calculation

Details: Accurate current calculation is crucial for circuit design, component selection, safety analysis, and troubleshooting electrical systems.

4. Using the Calculator

Tips: Enter voltage in volts and resistance in ohms. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What if I have multiple resistors?
A: For series circuits, add resistances. For parallel circuits, use reciprocal formula: 1/R_total = 1/R1 + 1/R2 + ...

Q2: Does Ohm's Law apply to AC circuits?
A: Yes, but with impedance instead of pure resistance for reactive components.

Q3: What are typical current values?
A: Current values vary widely from microamps in electronics to amps in power systems.

Q4: Are there limitations to Ohm's Law?
A: Ohm's Law applies to ohmic materials. Non-ohmic devices like diodes don't follow this linear relationship.

Q5: How accurate is this calculation?
A: The calculation is mathematically precise for ideal resistors under constant conditions.