Questions:
1. The resistor is necessary to prevent an exploding LED when the potentiometer is turned to offer the least resistance.
2.The total resistance offered by the potentiometer and resistor is 10560 Ohms, so using Ohm's Law we get 5 = I * 10560 resulting in a current of .00047A.
3. There are also digital variable resisters.
No comments:
Post a Comment