How can we find the emitter and collector of an LDR. I am using it in the following circuit but I don't know how to identify which terminal of the LDR is emitter or collector.
Here it is mentioned as Photo-transistor but it is basically 2 leg transistor which is hard to find in the market so I decided to use LDR.
Answer
You don't. Light dependent resistor is a resistor which means that it doesn't have a collector and emitter. It instead has two terminals that are used just like on regular resistor.
You can actually see that from the schematic symbol:
Both leads are the same and it doesn't matter in which direction current goes through it.
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