5,710
edits
Changes
→Activities
** Observe how the output voltage changes as you turn the knob.(measure at the point between the potentiometer and the resistor) What is the highest voltage you can get? What is the lowest?
** Now replace the 10K resistor with a 1K resistor and measure how the voltage changes as you turn the knob. What is the new lowest voltage you can get?
[[Image:Pot_divider_10k.png | 300px200px]][[Image:Pot_divider_1kPot_divider_1K.png | 300px200px]]
* Photoresistor as variable resistance
** measure the "light" resistance of your photoresistor