Recent content by zug

Homework Statement Problem: A car's rear window defroster uses 15 strips of resistive wire in a parallel arrangement. If the total resistance is 1.4 ohms, what is the resistance of one wire? Solution: rearrange formula to $$ R nR_{T} = (15)(1.4 \Omega) = 21 \Omega $$ Question: What is the...

OMG, the current values are actually suppose to be in mA! :H So then, once I used the value (89.7 mA) in each equation it simply gives me the SAME value, not matter which equation I use. Thanks for pointing out the current values, I kind of feel dumb now. o0)

So maybe use the maximum current value 89.7 A and the minimum resistance value 78 ohms? Once I did this I get 628W, 628 kW and 628 mW. I'm still unsure of what formula to use.

Homework Statement [/B] The question "What is the minimum wattage rating the resistor should have?" comes after a previous problem I did to determine the maximum and minimum current when given a resistors tolerance. Here are all the values from that problem, some aren't really important but...