Electric Bell Flashcards
1
Q
What is the key part of the electric bell
A
the soft-iron armature
2
Q
Why is the soft metal armature so important
A
it gets attracted to the electromagnet and causes the hammer to ding
BUT
breaks the circuit at the same time
3
Q
Why is it important to use an electromagnet
A
so when current is flowing it works but when no current flows it doesn’t work
4
Q
When circuit is broken what does it look like
A
the soft iron armature is in contact with the magnet but not with the screw so circuit is broken
5
Q
After the circuit gets broken (iron armature loses contact with screw) what happen
A
the electromagnet stops producing a magnetic field so iron armature returns to normal position and completes circuit AGAIN
6
Q
What button can turn off the bell fully
A
bell-push to fully break circuit
