1. What is a Current in Resistor Calculator?

Definition: This calculator determines the electric current flowing through a resistor using Ohm's Law.

Purpose: It helps electrical engineers, technicians, and students quickly calculate current in a circuit.

2. How Does the Calculator Work?

The calculator uses Ohm's Law formula:

Where:

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

Explanation: The voltage across the resistor is divided by its resistance to calculate the current flowing through it.

3. Importance of Current Calculation

Details: Proper current calculation ensures circuit components operate within their rated specifications and prevents damage from excessive current.

4. Using the Calculator

Tips: Enter the voltage across the resistor and its resistance. Both values must be positive numbers greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: What is Ohm's Law?
A: Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

Q2: Can I use this for AC circuits?
A: This calculator is for DC circuits. For AC circuits with purely resistive loads, it can be used with RMS values.

Q3: What if my resistance is zero?
A: Zero resistance would create a short circuit (theoretical infinite current). In practice, all conductors have some resistance.

Q4: How precise are the results?
A: Results are precise to 6 decimal places, though practical measurements may have less precision.

Q5: What units does this calculator use?
A: Volts for voltage, ohms for resistance, and amperes (amps) for current.