1. What is a Parallel Resistor Current Calculator?

Definition: This calculator determines the current flowing through a branch in a parallel circuit based on the voltage and branch resistance.

Purpose: It helps electrical engineers, technicians, and students analyze parallel circuits and calculate current distribution.

2. How Does the Calculator Work?

The calculator uses Ohm's Law for parallel branches:

Where:

• \( I_{branch} \) — Current through the branch (amps)
• \( V \) — Voltage across the branch (volts)
• \( R_{branch} \) — Resistance of the branch (ohms)

Explanation: The voltage divided by the branch resistance gives the current flowing through that specific branch.

3. Importance of Branch Current Calculation

Details: Calculating branch currents is essential for proper circuit design, component selection, and ensuring safe current levels in each branch.

4. Using the Calculator

Tips: Enter the voltage across the parallel branches and the resistance of the specific branch you're analyzing. Resistance must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Does this work for series circuits?
A: No, this is specifically for parallel branches. In series circuits, current is the same throughout.

Q2: What if I have multiple resistors in one branch?
A: First calculate the total resistance of that branch (sum for series, reciprocal sum for parallel).

Q3: How do I measure branch resistance?
A: With power off, use an ohmmeter across the branch points (without other parallel branches connected).

Q4: What's the relationship between branch currents?
A: In parallel circuits, the branch with lower resistance carries more current.

Q5: Can I calculate total current with this?
A: No, this calculates individual branch current. For total current, sum all branch currents.