HelmholtzSim

Electromagnet Simulator

Simulate an electromagnet with an iron core.

Physical Constants

Permeability of Free Space (μ₀):

1.26e-6 T·m/A

Copper Resistivity (ρ):

1.68e-8 Ω·m

Max Current Density (Jₘₐₓ):

3.0 A/mm²

Relative Permeability of Core (μᵣ):

2,000

Interactive Parameters

Adjust sliders to design your electromagnet. B is field inside the core (long solenoid approx).

Core Length (L)0.100 m

Core Radius (r)10.0 mm

Number of Turns (N)100 turns

Current (I)1.00 A

Magnetic Field (B in core approx.)0 µT

Derived Electrical & Thermal Properties

Req. Wire Cross-Section:

0.333 mm²

Req. Wire Diameter:

0.651 mm

Total Wire Length:

7.72 m

Total Wire Resistance:

0.389 Ω

Total Power Dissipation:

0.389 W

Coil Winding Cross-section

Define the coil former's channel around the core.

Channel Width (axial)10.0 mm

Channel Height (radial)10.0 mm

Calculated Wire Diameter:

0.651 mm

Wires per Row (Ideal):

Number of Rows (Ideal):

Actual Winding Width:

9.77 mm

Actual Winding Height:

4.56 mm

Channel Area:

100.0 mm²

Total Copper Area:

33.33 mm²

Fill Factor:

33.3 %

Packing Status:

Winding fits in channel.

Magnetic Field Profile Along Axis

Magnetic field (B) along the central axis (z) of the electromagnet. Center is at z/L_core = 0. Core ends are at z/L_core = ±0.5.