1. What is Current Through Parallel Resistors?

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

Purpose: It helps electrical engineers, technicians, and students analyze and design parallel resistor circuits.

2. How Does the Calculator Work?

The calculator uses Ohm's Law formula:

Where:

• \( I_{total} \) — Total current (amps)
• \( V \) — Voltage across the circuit (volts)
• \( R_{eq} \) — Equivalent resistance of parallel resistors (ohms)

Explanation: The voltage is divided by the equivalent resistance to calculate the total current flowing through the parallel circuit.

3. Importance of Current Calculation

Details: Proper current calculation ensures circuit components operate within their rated capacities and helps prevent overheating or damage.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: How do I find equivalent resistance for parallel resistors?
A: For parallel resistors, use: \( \frac{1}{R_{eq}} = \frac{1}{R_1} + \frac{1}{R_2} + \cdots + \frac{1}{R_n} \)

Q2: What happens if resistance is zero?
A: Zero resistance would cause infinite current (short circuit), which is physically impossible in real circuits.

Q3: Does this work for AC circuits?
A: This calculates DC current. For AC, you would need to consider impedance and phase angles.

Q4: Why is current higher in parallel circuits?
A: Parallel paths provide multiple current routes, reducing total resistance and increasing current.

Q5: How does voltage affect current?
A: Current is directly proportional to voltage (higher voltage = higher current for same resistance).