0
Q
What current do photocell create?
A
Direct current (DC)
1
Q
What is direct current?
A
The current flows the same way around thee circuit.
2
Q
What are photocells made of and why?
A
They a made of silicon- semiconductor
The silicon atoms absorb the photo energy knocking loose some electrons
The electrons then flow around the circuit.
3
Q
What factors determine the current and power output of a photocell?
A
Surface area (gets more sunlight) Intensity of the light (produces more elec) Distance from source (closer it is then more intense the light)
4
Q
What are the advantages and disadvantages of photocells?
A
Advantages
No moving parts
