Generators Flashcards
1
Q
Movement produces…
A
current
2
Q
A potential difference is induced between the ends of the wire when…
A
a wire cuts through the magnetic field
3
Q
If the wire is a part of a complete circuit…
A
a current will be induced
4
Q
If we move a magnet into a coil…
A
a current is induced in one direction
5
Q
How can we induce a current in the opposite direction?
A
Moving the magnet out of the coil
Moving the other pole into the coil
6
Q
If there is no movement…
A
no current is induced
7
Q
We can increase the potential difference by…
A
Increasing the area of the coil
Increase the speed of the magnet
Increase the magnetic field strength
Increase the number of turns on the coil
8
Q
Why do we need brushes?
A
They push against the slip rings to keep the circuit complete
9
Q
Why do we need slip rings?
A
It allows rotation
