transformers. Flashcards
1
Q
what are the 4 steps of a transformer working?
A
close switch allows current to flow.
iron core becomes magnetised- little magnets point same way- lines of magnetic flux.
change in magnetic field in coil- field lines cut.
produces an induced potential difference and if there is a closed circuit a current flows.
2
Q
what type of current is passed through the coil?
A
alternating current.
3
Q
what does a transformer produce, where?
A
alternating magnetic field in the iron core.
4
Q
what do the flux lines of the alternating magnetic field do?
A
pass through and cut the secondary coil.
5
Q
what does the transformer process induce?
A
alternating potential difference in the secondary coil.
