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What is LDR: Resistance and Light Intensity about?
A light depending resistor (LDR) or photoresistor is a component that decreases its resistance with increasing light intensity. An LDR has a very high resistance, sometimes over 1,000,000 ohms, in the dark but its resistance drops significantly when illuminated. When light of high intensity falls on an LDR, photons give electrons enough energy to jump into the conduction band, allowing electricity to flow through the semiconductor and lowering its resistance. With low light intensity, the LDR
- Author
- Siji Varghese
- Language
- EN