Electromagnetism & motor effect (Edexcel GCSE Physics): Flashcards
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12 cards from this deck
Motor effect
Motor effect
A wire carrying current experiences force in a magnetic field
Angle for full force in motor effect
Angle for full force in motor effect
90° to magnetic field
Force when wire parallel to magnetic field
Force when wire parallel to magnetic field
No force
Direction of motor effect force
Direction of motor effect force
Right angle to both wire and magnetic field
Fleming's left-hand rule: index finger
Fleming's left-hand rule: index finger
Magnetic field direction (north to south)
Fleming's left-hand rule: middle finger
Fleming's left-hand rule: middle finger
Current direction
Fleming's left-hand rule: thumb
Fleming's left-hand rule: thumb
Force direction
Angle between directions in Fleming's left-hand rule
Angle between directions in Fleming's left-hand rule
90° to each other
Conventional current direction
Conventional current direction
Moves in opposite direction to electrons
Formula for motor effect force
Formula for motor effect force
Unit of magnetic flux density
Unit of magnetic flux density
Tesla (T)
What is magnetic flux density
What is magnetic flux density
Number of flux lines per metre squared