what is ldr

An LDR, or Light Dependent Resistor, is a type of photoresistor that is sensitive to light. It is a key component in many electronic devices, including light sensors, cameras, and automatic streetlights. LDRs work by changing their resistance in response to the intensity of light falling on them. When the light level increases, the resistance of the LDR decreases, and vice versa. LDRs are commonly used in applications where it is necessary to detect the presence or absence of light. They are reliable and cost-effective, making them an ideal choice for light-sensing applications. LDRs are available in various shapes and sizes, making them versatile for use in different electronic circuits. Overall, LDRs are essential components in modern technology, enabling devices to respond to changes in light levels and providing a practical solution for light detection and control.