M3.4 Flashcards
1
Q
What are the different ways of generating voltage?
A
- induction (coil and magnet)
- chemical (electrolysis)
- heat
- light
- crystal deformation
- friction
2
Q
What is induction?
A
When a coil enters the magnetic field of a magnet
3
Q
What is electrolysis?
A
When two different pieces of metal are put into a electrically conducted liquid a voltage is generated
4
Q
What is crystal deformation?
A
When a Piezo crystal is deformed by pressure, a voltage is generated (also known as piezoelectric effect)
5
Q
Can electrons move through normal air?
A
Yes but only if the magnetic field is strong enough
6
Q
Where is the magnetic field concentrated?
A
At the edge
