Question

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 1

Answer: (B)

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.