Current Formula:
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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.
The calculator uses Ohm's Law formula:
Where:
Explanation: The voltage across the resistor is divided by its resistance to calculate the current flowing through it.
Details: Proper current calculation ensures circuit components operate within their rated specifications and prevents damage from excessive current.
Tips: Enter the voltage across the resistor and its resistance. Both values must be positive numbers greater than 0.
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.