Telecommunications

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I'm sorry, but I don't know what it is you are asking. What voltage? What is it in reference to. Thanks.
 
:confused: Resistors are measured in ohms, not watts.

Use an Ohms Law chart to figure it:
ohmlaw.gif


P=power used (watts)
R=resistance (ohms)
E=EMF (volts)
I=amperage (amps)
 
If you're asking what size resister based on the amount of power the resister is rated for, use 480's chart and P=IE to determine min. wattage rating of a the resister. Still not exactly sure what you're looking for.
 
Answer the question yourself with ohms law. You already know the current. Now all you need is either voltage or resistance.

What does this have to do with Telecom? This is very basic, DC circuits 101 class. day 1.
 
Sizing Resistor

Sizing Resistor

Also, after you take spsnyder's advice to take 480's advice and determine the rating you will need, add a safety margin. For example, if you determine that the resistor will need to dissapate 1/4W of heat, don't choose a 1/4W resistor because the voltage or current may fluctuate, the resistor will vary in resistance, and the ambient temperature may be hotter than anticipated. That 1/4W resistor may become stressed.
 
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