1. What is Ohm's Law?

Ohm's Law states that 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 that current increases with higher voltage and decreases with higher resistance.

3. Importance of Current Calculation

Details: Calculating total circuit current is essential for designing electrical circuits, selecting appropriate wire gauges, and ensuring safety in electrical systems.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is equivalent resistance?
A: The single resistance value that could replace all resistors in a circuit while maintaining the same current flow.

Q2: What are typical current values in household circuits?
A: Standard household circuits in the US are typically 15 or 20 amps at 120 volts.

Q3: How does current relate to power?
A: Power (in watts) equals voltage times current (P = VI). Higher current at the same voltage means more power.

Q4: What happens if resistance is zero?
A: This would theoretically result in infinite current (a short circuit), which is dangerous in real systems.

Q5: Does this work for AC circuits?
A: The basic form works for DC circuits. For AC, you need to consider impedance (which includes resistance and reactance).