How does the resistance of an LDR change in response to increased light intensity?

A Light Dependent Resistor (LDR) is designed to change its resistance based on the intensity of light falling on it. As the light intensity increases, the number of charge carriers in the material becomes greater, allowing more current to flow through the LDR. This means that the resistance decreases.

The materials used in an LDR are typically semiconductors, and they react to light exposure by altering their electrical properties. So, when light shines on the LDR, the energy from the light photons excites electrons, allowing them to carry more current. This reduction in resistance in response to increased light intensity is a fundamental characteristic of LDRs, making them useful in various applications such as light sensors and automatic lighting systems.