Final answer:
A photoconductive cell conducts current based on light intensity and utilizes the photoelectric effect where the photocurrent increases with higher light intensities.
Step-by-step explanation:
A photoconductive cell, also known as a photocell or photoresistor, conducts current as a function of light intensity. These semiconductor devices change their electrical conductivity when exposed to light. When light is absorbed by the semi-conductive material, it results in the ejection of electrons and the creation of electron voids. The chain of movements involving these charged particles creates an electric current, allowing the cell to conduct electricity. The relationship between light intensity and electrical current is evident in the photoelectric effect, where increased light intensity results in a higher photocurrent, as demonstrated by experiments with evacuated glass tubes, photocells, and electric potential difference measurements.