Question
Physics Question on Semiconductor electronics: materials, devices and simple circuits
In a p-n junction photo cell, the value of the photo-electromotive force produced by monochromatic light is proportional to
A
The barrier voltage at the p-n junction.
B
The intensity of the light falling on the cell.
C
The frequency of the light falling on the cell.
D
The voltage applied at the p-n junction.
Answer
The intensity of the light falling on the cell.
Explanation
Solution
In photocell, photoelectromotive force, is the force that stimulates the emission of an electric current when photovoltaic action creates a potential difference between two points and the electric current depends on the intensity of incident light.