What is LDR and how it works with circuit to try on?
LDR ( Light-dependent resistor) A photo-resistor (or light-dependent resistor, LDR, or photo-conductive cell) is a light-controlled variable resistor. The resistance of a photo-resistor decreases with increasing incident light intensity; in other words, it exhibits photoconductivity. [1] In the dark, their resistance is very high, sometimes up to 1MΩ, but when the LDR the sensor is exposed to light, the resistance drops dramatically, even down to a few ohms, depending on the light intensity. LDRs have a sensitivity that varies with the wavelength of the light applied and are nonlinear devices. For example it can be used to turn on a light when the LDR is in darkness or to turn o a light when the LDR is in light. It can also work the other way around so when the LDR is in the light it turns on the circuit and when it’s in darkness the resistance increases and disrupts the circuit. How it Works? The way an LDR works is that they are made of many semi-conductive mate...