3.4 Flashcards
1
Q
6 ways of generating electricity
A
Light magnetism heat friction chemical and pressure
2
Q
How does pressure generate electricity
A
Using the piezoelectric effect
Pressure is used to deform the piezo crystal which indices a voltage
3
Q
What 3 factors effect induction by magnetism
A
Turns
Movement
Strength
4
Q
How does friction generate electricity
A
Isolators are rubbed
Charges are separated
Voltage is generated
Can reach the KV zone
5
Q
How does light generate electricity
A
Light impinge on semi conductor(silicon) which causes an increase in vibrations which induces a current
6
Q
How does heat generate electricity
A
Heat increases movement energy.
(Thermocouples) thermionic emission
