Compute precision coil magnetics instantly now.
Electromagnetism forms the bedrock of modern electrical engineering, powering everything from massive industrial transformers to delicate relay switches. When an electric current flows through a conductive wire wound into a coil, it generates a magnetic field. Controlling and predicting this magnetic behavior is crucial for designing efficient circuits, actuators, and rotating machinery.
For an ideal long solenoid, the magnetic field inside the coil is calculated using the formula:
$$B = \mu \cdot \left(\frac{N}{L}\right) \cdot I$$
Where $B$ represents the magnetic field in Teslas, $\mu$ is the magnetic permeability of the core material, $N$ is the number of turns, $L$ is the length of the coil, and $I$ denotes the electric current in Amperes.
Input your parameters into the designated fields across the three columns. Specify your current, total turns, geometry, dimensions, core permeability, and resistance values. Click the calculate button to instantly review detailed field strength, energy, and electrical metrics above the form.
What is relative permeability?
Relative permeability measures how much more conductive a core material is to magnetic flux compared to a vacuum.
Why does temperature matter?
Higher operating temperatures increase wire resistance, which alters power dissipation and overall coil efficiency.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.