Fleming’s left-hand rule
E447289
Fleming’s left-hand rule is a mnemonic used in electromagnetism to predict the direction of force on a current-carrying conductor in a magnetic field.
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
mnemonic
ⓘ
rule in electromagnetism ⓘ |
| appliesIn |
electric motors
ⓘ
galvanometers ⓘ moving-coil loudspeakers ⓘ rail guns and linear motors ⓘ |
| appliesTo | current-carrying conductor in a magnetic field ⓘ |
| associatedWith |
Lorentz force
NERFINISHED
ⓘ
motor effect ⓘ |
| assumes |
straight conductor segment for simple application
ⓘ
uniform magnetic field in region of conductor ⓘ |
| basedOn | vector cross product between current and magnetic field ⓘ |
| category |
electromagnetic rule
ⓘ
physics mnemonic ⓘ |
| clarifies | relationship between magnetic field, current, and force directions ⓘ |
| contrastedWith | Fleming’s right-hand rule ⓘ |
| conventionalCurrent | positive to negative ⓘ |
| directionConvention |
first finger at right angles to second finger
ⓘ
second finger at right angles to thumb ⓘ thumb perpendicular to first and second fingers ⓘ |
| educationalUse |
helps visualize vector directions in 3D
ⓘ
taught in school physics ⓘ |
| field | electromagnetism ⓘ |
| fingerRepresentation |
first finger represents direction of magnetic field
ⓘ
second finger represents direction of conventional current ⓘ thumb represents direction of force or motion ⓘ |
| handUsed | left hand ⓘ |
| hasAlternativeName | Fleming’s left-hand motor rule ⓘ |
| helpsAvoid | sign errors in direction of force ⓘ |
| historicalPeriod | early 20th century ⓘ |
| namedAfter | John Ambrose Fleming NERFINISHED ⓘ |
| notation | FBI mnemonic (Force, B-field, I current) in some texts ⓘ |
| relatedConcept |
Lorentz force law
NERFINISHED
ⓘ
right-hand rule for cross products ⓘ |
| relatesQuantity |
electric current
ⓘ
magnetic field ⓘ mechanical force ⓘ |
| rightHandRuleUsage | Fleming’s right-hand rule is used for generators NERFINISHED ⓘ |
| usedBy |
students of physics and electrical engineering
ⓘ
teachers of electromagnetism ⓘ |
| usedFor |
determining direction of motion in electric motors
ⓘ
predicting direction of force on a current-carrying conductor ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.