Does every LED need a resistor?

Related questions

1. Do 12v LEDs need resistors?
2. Can you burn out an LED light?
3. Is the red wire the anode or cathode?
4. What causes the difference in color between LEDs?
5. How does RGB LED work?
6. What are the advantages of LED?
7. Is anode red or black?
8. What is RGB color format?
9. Is the anode oxidized or reduced?
10. Which side of an LED is positive?

Tags

1. #through
2. #determine
3. #parallel
4. #however
5. #higher
6. #limiting
7. #voltage
8. #string
9. #other
10. #characteristic
11. #sharing
12. #divided
13. #considerably
14. #current
15. #resistor
16. #means