- Dec 18, 2000
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Anyone know a lot about electricity and formula related stuff? I am stuck on a stupid ass online homework question that is stupid and easy and when i put the right answer in it says no. i have 1 guess left until i am penalized...so ...help heres the question with a formula! you just plug in the numbers...but..its stupid!!!
Resistance =
resistivity of material * length of wire / cross sectional area of wire
resistance is in ohms
1 inch = 2.54 cm
100 cm = 1 meter
You wish to make 13 ohm electric heating coil from 18 gauge nichrome wire. The resitivity of nichrome is 1E-4 ohm-cm and the cross-sectional area of 18 gauge wire is 0.001276 in^2.
What length of wire in meters is needed? _________ meters
fill in the meters part please!!!!
Resistance =
resistivity of material * length of wire / cross sectional area of wire
resistance is in ohms
1 inch = 2.54 cm
100 cm = 1 meter
You wish to make 13 ohm electric heating coil from 18 gauge nichrome wire. The resitivity of nichrome is 1E-4 ohm-cm and the cross-sectional area of 18 gauge wire is 0.001276 in^2.
What length of wire in meters is needed? _________ meters
fill in the meters part please!!!!