resistor question

[Bustacapp]

can you use a 470k-0 ohm resistor in place of a 470 ohm resistor for a standard 3.7v box mod w/led?

 

[Java_Az]

You can but your LED wont light up. Big difference in 470k ohms and 470 ohms. 470K has 1000 times more resistance then a 470 ohm resistor.

Edit: It takes 1000 ohms to make 1k ohm

 

[Bustacapp]

ok is a 2v LED too much ?
i didnt know if 470k would still work just need more power through it or what (no idea what im doin yet )

 

[Java_Az]

Here is a calculator for the resistor value for LED's You have two of the values needed already posted in here Supply voltage is 3.7 (nominal ). The forward voltage of the LED 2 volts. All you need now is the LED's rated mA value. Throw those three in the calculator and it will tell you the best value resistor to use for your set up.

Super Bright LEDs - LED Information

 

[Bustacapp]

56 ohms thanks alot seems like a big jump from 470 def a big jump from 470k (wasn't paying attention to the package when i bought em)