Light In Dark(Automatic Torch)

SRJT06103

Jugaadu returns late from his office daily in the evening. While returning to his home, due to complete darkness, he is not able to see the switches of his room so that he can turn on the lights. He faces the same problem daily. Can you help him out to develop something to overcome this problem?

Bag Items:

1. Cretile Kit

For this purpose, we can make use of a Light-controlled variable resistor (LDR). In the presence of light, the resistance of LDR increases prohibiting the conduction of electricity and thus electric device gets turned OFF. In the dark, resistance value decreases allowing the conduction of electricity and thus the device gets turned ON.