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Calculating and Applying the Motor Effect — OCR GCSE Combined Science B J260
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Combined Science
OCR GCSE Combined Science B
Electric Circuits
Electric Motors and the Motor Effect
Calculating and Applying the Motor Effect
OCR GCSE Combined Science B · J260
Calculating and Applying the Motor Effect
What you need to know
Describe the forces of interaction between a current-carrying conductor and a magnet, explaining the part played by magnetic fields.
Apply Fleming's left-hand rule to represent the relative geometric orientations of force, the conductor, and the magnetic field.
Calculate the forces involved using the equation linking force, magnetic flux density, current, and conductor length.
F
=
B
×
I
×
l
F = B \times I \times l
F
=
B
×
I
Revision notes
1
Calculating and Applying the Motor Effect
4 key terms
Practise with past papers
Key terms & definitions
Previous topic: Magnetic Fields
Magnets and Electromagnetism
Next section: Forces and Motion
Interaction Forces and Weight
×
l
Explain how a simple electric motor uses the force on a conductor in a magnetic field to make its rectangular coil rotate.