Explain the functioning of a photocell. Give its two uses.
Answers
Answered by
2
A photocell is a light sensitive element like a variable resistor that can be used as a sensor to detect either the presence or absence of light, when exposed or shined upon it… when used in conjunction with some electronic components in a circuit can be used as a switch or a trigger…
uses
Photocells act as light sensors. ... For example, you might want a sensor that detects when a flashlight is on, or when the sun is out. Photocells are used in automatic night lights and in street lamps that turn themselves on at night. Sometimes known as photoresistors, photocells are available from a number of sources.
uses
Photocells act as light sensors. ... For example, you might want a sensor that detects when a flashlight is on, or when the sun is out. Photocells are used in automatic night lights and in street lamps that turn themselves on at night. Sometimes known as photoresistors, photocells are available from a number of sources.
Similar questions