मुफ्त शक्ति क्षय कैलकुलेटर
अवयव में शक्ति क्षय (पावर डिसिपेशन) निकालें। करंट और प्रतिरोध दर्ज करें।
ft
ohm-cmil/ft
One-Way Resistance
0.1588 Ω
Wire Diameter80.81 mils
Round-Trip Resistance0.3176 Ω
One-Way Resistance vs AWG Gauge Number
सूत्र
## Wire Gauge Resistance ### AWG Diameter **d(mils) = 1000 x 92^((36-AWG)/39) / 200** ### Resistance **R = rho x L / A** Copper: rho = 10.37 ohm-cmil/ft at 20 C.
हल किया गया उदाहरण
100 ft of 12 AWG copper.
- 01Diameter = 80.81 mils
- 02Area = 6530 cmil
- 03R = 10.37 x 100 / 6530 = 0.1588 ohms
- 04Round-trip = 0.3177 ohms
अक्सर पूछे जाने वाले प्रश्न
What is AWG?
American Wire Gauge. Smaller numbers = larger wire.
Why round-trip?
Current flows out and back, so total wire resistance is doubled.
Temperature effect?
Copper resistance increases about 0.4% per degree C.
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