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Magnetic Field Energy Density Permeability Factor Tool

Return B²/(2*mu) for an explicitly linear nondispersive magnetic medium in compatible SI units.

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Description

Return a magnetic-field energy-density term.

Signed and complex response quantities require an explicit convention as well as compatible units. A reciprocal, density change or loss magnitude can preserve algebra while the physical sign, frequency dependence and material interpretation remain separate questions.

Return a magnetic-field energy-density term.

When to use this tool

Use Magnetic Field Energy Density Permeability Factor when converting the stated signed, complex or response-property basis.

How to use the tool and how it works

  1. Enter field, permeability. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read energyDensity. Use the output convention below.

Return a magnetic-field energy-density term. Require permeability > 0; energyDensity = field²/(2*permeability).1

Input fieldMeaning and unitsAccepted input
fieldMagnetic flux density B; teslas with permeability in H/m give J/m³.Required. Finite number.
permeabilityPermeabilityRequired. Finite number; strictly above 0.
Output fieldInterpretationReturned shape
energyDensityEnergy DensityRequired. Finite number.
json
{
  "input": {
    "field": 2,
    "permeability": 4
  },
  "output": {
    "energyDensity": 0.5
  }
}

Limitations and assumptions

  • Field is magnetic flux density B in teslas with H/m permeability for J/m³; constant linear permeability is assumed.
  • Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
  • Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.

Alternative or Complementary methods

Use the applicable SI/cgs, complex-phase and material-response conventions; use full tensor or frequency-dependent models where scalar relations are insufficient.

References

  1. Calculation and input contract: convert/magnetic-field-energy-density-permeability-factor — tool.io

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