Final answer:
A photoresistor is an electronic component that decreases its electrical resistance when exposed to light.
Step-by-step explanation:
A photoresistor is an electronic component whose electrical resistance decreases when it is exposed to light. When light shines on the photoresistor, the photons in the light excite the electrons in the material, allowing them to move more freely, which in turn reduces the resistance.
This change in resistance can be used in various applications such as light-sensitive circuits, light meters, and automatic outdoor lighting systems.
A photoresistor is an electronic component whose electrical resistance decreases when it is exposed to light. This means that the correct answer is a changes, specifically a decrease in resistance. It is important to note that a resistor primarily dissipates power in the form of heat, not sound, light, or charge.
When discussing circuits with resistors, such as an incandescent light bulb, an increase in resistance typically results in the bulb emitting a redder light due to a reduction in the temperature of the filament.