The LDR is a variable resistor whose resistance decreases with the increase in light intensity. When the light falling on an LDR has normal intensity, its resistance is large enough and the voltage across R 1 is insufficient to trigger the SCR. What is the full form of LDR ? - Light Dependent Resistor - Light Dependent Resistor ( LDR ) is a type of resistor that changes its resistance in LDR Full Form is Light Dependent Resistor. Read the article to know the working process of LDR as a resistor and its multiple uses. LDR full form is Light Dependent Resistor. LDR is also commonly known as a Photoresistor because its working principle depends upon the absorption of photons. LDR is also known as a photocell, photoconductor, etc.
