reluctivity

[rel-uhk-tiv-i-tee]

noun

Electricity.

1. the tendency of a magnetic circuit to conduct magnetic flux, equal to the reciprocal of the permeability of the circuit.

reluctivity

/ ˌrɛlʌkˈtɪvɪtɪ /

noun

1. physics a specific or relative reluctance of a magnetic material

Word History and Origins

Origin of reluctivity¹

First recorded in 1885–90; reluct + -ive + -ity

Word History and Origins

Origin of reluctivity¹

C19: _reluct + -ivity on the model of conductivity

Example Sentences

The quotient of the total magnetic flux, Z, in a circuit by the cross section, S, of the circuit is called the mean “flux density,” and the reluctance of a magnetic circuit one centimetre long and one square centimetre in cross section is called the “reluctivity” of the material.

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This equation tells us the exciting force reckoned in ampere-turns, AN, which must be put on the ring core to create a total magnetic flux Z in it, the ring core having a mean perimeter l and cross section S and reluctivity ρ = 1/μ corresponding to a flux density Z/S. Hence before we can make use of the equation for practical purposes we need to possess a curve for the particular material showing us the value of the reluctivity corresponding to various values of the possible flux density.

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