Glossary for Electromagnetism

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The measure of how well a power generator maintains constant voltage over a range of load currents is called voltage regulation. It can be calculated from the following formula:

R e g percent sign equals 100 asterisk times fraction numerator V subscript n o space l o a d end subscript space minus space V subscript f u l l space l o a d end subscript over denominator V subscript f u l l space l o a d end subscript end fraction


Reluctance is the magnetic equivalent to resistance.


left over


This is the ability of a ferromagnetic materiap to retain magnetic flux