back-EMF - meaning and definition. What is back-EMF
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What (who) is back-EMF - definition

VOLTAGE THAT OPPOSES THE CHANGE IN CURRENT WHICH INDUCED IT
Back emf; Back e.m.f.; Back-emf; Counter EMF; Counter emf; Back EMF; Back electromotive force; Back-EMF; CEMF

Counter-electromotive force         
Counter-electromotive force (counter EMF, CEMF, back EMF),Graf, "counterelectromotive force", Dictionary of Electronics is the electromotive force (EMF) manifesting as a voltage that opposes the change in current which induced it. CEMF is the EMF caused by electromagnetic induction.
EMF         
WIKIMEDIA DISAMBIGUATION PAGE
Emf; E.m.f.; EMF (disambiguation); E.M.F.
¦ abbreviation
1. electromagnetic field(s).
2. (emf) electromotive force.
3. European Monetary Fund.
Back-to-back house         
  • A typical yard of 14 back-to-back houses. Note the shared "privies" (outdoor toilets) and "wash houses"
  • Back-to-back houses in Bellshaw Street, Bradford, showing a covered entrance to the courtyard
  • With no rear yard, across-street washing lines are employed with a [[pulley]] operated from street level.
  • Back-to-back housing courtyard, 1883
  • The exterior of the Birmingham back-to-backs, with shops and courtyard entrance
  • The courtyard
  • Plans for houses in Nottingham, 1844
FORM OF TERRACED HOUSE
Back to backs; Back-to-back housing; Back-to-back houses; Back to back house; Back-to-backs
Back-to-backs are a form of terraced houses in the United Kingdom, built from the late 18th century through to the early 20th century in various guises. Many thousands of these dwellings were built during the Industrial Revolution for the rapidly increasing population of expanding factory towns.

Wikipedia

Counter-electromotive force

Counter-electromotive force (counter EMF, CEMF, back EMF), is the electromotive force (EMF) manifesting as a voltage that opposes the change in current which induced it. CEMF is the EMF caused by electromagnetic induction.