Basic idea about LDR Sensor - what is photoresistor

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in this video we learn basic idea about LDR. LDR is a light controlled variable resistor. Its total depends on Light. When light increase then LDR Resistor decrease. And when light decrease then LDR Resistor increase. LDR is stand for, Light Dependent Resistor.
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Super.... I am an ECE student i am addicted to ur vid...

ccuba