Unit 3 - Transformers Flashcards
1
Q
What are transformers (both) made up from?
A
Two coils (the primary and secondary) joined with an iron core
2
Q
What do step-up transformers do? What are their turns like on the coils?
A
Step the voltage up.
They have more turns on the secondary coil than the primary coil
3
Q
What do step-down transformers do? What are their turns like on the coils?
A
Step the voltage down.
They have more turns on the primary coil than the secondary coil
4
Q
What do transformers do? what does this mean?
A
They use electromagnetic induction to change the pd, so they ONLY WORK ON AC
5
Q
What does the primary coil produce?
A
A magnetic field which stays within the iron core
6
Q
A
