resistors?

[500000watts 10+ year member]

i notice that the little LED's that take about 1.5v are way more bright then a regular 12v LED. is there a forumula where i can figure out what size resistor i need for how many volts my LED's are?

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[kombat96 10+ year member]

Ohms laws

 

[matrxx dude 5,000+ posts]

480 ohm resistor

 

[phantom240 5,000+ posts]

wire 8 in series, thus eliminating the need for a resistor?