Flashcards
Electromagnetism
Flashcards do conjunto (4)
- 1Electromagnetism The Metals which can have magnetic properties are: *Iron *steel - permanent magnet *cobalt *nickelFleming's Right-Hand grip rule
- 2Making Electromagnets you need: *Iron Core *Coil of wire *Electricity How to increase the strength of an electromagnets: -Increase the current -Increase the amount of Fe -Increase the number of coilsThe Motor Effect
A force can act on a wire in a magnetic field when a current is passed through the wire.
The size of the force can be increased by:
-Increasing the current
-Using a stronger magnetic
Size of the force depends on its angle:
-Great force = when the wire is PERPENDICULAR to the field lines.
-Zero force = when the wire is PARALLEL to the field lines - 3Left Hand RuleMagnetic Flux Density
-A measure of the STRENGTH of the magnetic field.
-Magnetic Flux = the amount of field lines passing through a surface
-Density = how compact something is.
- 4Force (N) = Magnetic flux density (Tesla) X current (Amps) X length (m) F = BILThe symbols:
Force = F
Magnetic flux density = B
Current = I
Length = L
Informações
- Descrição
- Year 10 science (Physics) FlashCards sobre Electromagnetism, criado por Aoife Warren em 02-02-2017.
- Criado por
- Aoife Warren
- Visualizações
- 39
- Avaliação