# Calculating resistance of winding in coil conductor?

Discussion in 'Electronics Homework Help' started by Wena DJ, May 22, 2017.

1. ### Wena DJ

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May 22, 2017
Hi, I'm busy with Electrotechnics and I'm busy doing some worked examples and I've come across this question and i have no idea where to start:

"A coil having 1500 turns of a conductor with a combined cross-sectional area of 300mm(squared) and a mean length per turn of 400mm, has an inductance of 3H"

Calculate:
"The resistance of the winding if the resistivity (specific resistance) of the conductor is 4micro-OHM.m"

Some help would be hugely appreciated. I cannot find the correct formula to even start working on this question.

2. ### (*steve*)¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥdModerator

25,497
2,839
Jan 21, 2010
Well, you can start by calculating the length of the wire used to wind the coil

3. ### duke37

5,364
772
Jan 9, 2011
The resistance is the resistivity * length / area
You will need to get the area in meters squared and the length in meters.