Magnetic Flux Converter

Convert between weber (Wb), maxwell (Mx), gauss square centimeter, and other magnetic flux units with scientific precision.

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Magnetic Flux Units Explained

Weber (Wb)

The SI unit of magnetic flux, defined as the amount of magnetic flux through a surface perpendicular to a magnetic field. 1 Wb = 1 volt × 1 second. Named after physicist Wilhelm Eduard Weber.

Common uses: Transformer design, inductor specifications, electromagnetic induction calculations, and magnetic circuit analysis.

Milliweber (mWb)

One thousandth of a weber. 1 mWb = 0.001 Wb = 10,000 maxwell. Commonly used for small magnetic flux measurements.

Application: Small transformer cores, magnetic sensors, relay coils, and low-power magnetic devices.

Maxwell (Mx)

A CGS (centimeter-gram-second) unit of magnetic flux. 1 Mx = 10⁻⁸ Wb (or 1 Wb = 10⁸ Mx). Named after physicist James Clerk Maxwell.

Historical context: Part of the CGS-EMU system, widely used in older scientific literature and still common in certain research fields and magnetic materials testing.

Volt Second (V·s)

The fundamental SI definition of magnetic flux from Faraday's law of induction. 1 V·s = 1 Weber. Represents the electrical potential change per unit time change.

Application: Electromagnetic induction, induced EMF calculations, and magnetic circuit analysis using Faraday's law.

Gauss Square Centimeter

A CGS unit representing magnetic flux density times area. 1 G·cm² = 10⁻⁸ Wb. Commonly used in magnetic materials research and magnetism studies.

Application: Magnetic material characterization, hysteresis loop measurements, and magnetic properties testing.

Tesla Square Meter (T·m²)

An alternative SI definition of magnetic flux. 1 T·m² = 1 Weber. Represents magnetic field strength times area perpendicular to the field.

Application: Direct calculation of magnetic flux from field density and cross-sectional area in practical applications.

Unit Pole

A CGS-EMU unit representing a magnetic pole strength. 1 unit pole ≈ 7.96 × 10⁻⁸ Wb. Historically used in magnetic theory but largely obsolete in modern applications.

Historical context: Based on the concept of isolated magnetic poles, which modern theory recognizes cannot exist independently.

Line and Megaline

CGS units of magnetic flux. 1 line = 1 maxwell = 10⁻⁸ Wb, 1 megaline = 10⁶ maxwells. Legacy units from the CGS system.

Note: Rarely used in modern applications; primarily found in historical literature and vintage equipment specifications.

Magnetic Flux Applications & Context

  • Power transformers: Typically operate at core flux densities of 1-2 Tesla with large cross-sectional areas (webers)
  • Small transformers: Usually have flux values in the milliweber range
  • Permanent magnets: Produce flux ranging from microweber to millliweber depending on size and strength
  • Electromagnets: Flux output can range from nanoweber to multiple webers
  • Flux quantization: In superconductors, magnetic flux is quantized in units of the flux quantum (≈ 2.07 × 10⁻¹⁵ Wb)
  • Faraday's law: Induced voltage = -dΦ/dt (rate of change of magnetic flux)