I am fair new to electronics so I want to make sure I have this right before I start soldering stuff. I am trying to verify the correct resistor for my photocells. I have a medium photoresistor from Radio Shack. I tak emy multimeter and set it to 20kohms. it reads 2.57. so this is really 2570 ohms or 25700 ohms? my dark reading I set the meter to 200k and it shows a reading of 67.5 so I am not sure what the exact reading is. Still figuring everything out. Near as I can figure I need a 5k resistor for the photocells. Is this right?