The document describes an experiment to study how the current flowing through a light dependent resistor (LDR) varies with changes in the power and distance of an incandescent light source. The LDR's resistance decreases when exposed to light, increasing the current. The experiment found that the current increased as the light source's power increased or its distance from the LDR decreased. Common applications of LDRs include camera light meters, photocopying machines, and automatic lighting controls.