All Questions
4
questions
1
vote
1
answer
88
views
Disagreement between theoretical and experimental inductance of a coil
I have a coil of 20 AWG enameled copper magnet wire with approximately 270 turns: 9 layers of 30 turns. The coil is tightly packed with an overall height of about 30 mm, an overall outer diameter of ...
- 1,302
5
votes
1
answer
529
views
Current through a solenoid: magnetic field gives a staircase graph
We were running current through a solenoid coil with an iron core, and measuring the resultant magnetic field strength. We expected a purely linear relation for the "current-field strength" ...
- 51
2
votes
3
answers
4k
views
Why isn't my simple electromagnetic coil working? [closed]
For a science fair project I am building a coilgun and so far it has been pretty easy but now I have run into an issue. I have 2 layers of coil wrapped around a straw and when I attach power to the ...
- 21
1
vote
2
answers
2k
views
Magnetic flux density of a solenoidal electromagnet
I am designing an electromagnet which will be used to test magnetic sensors.
So I used to formula found at hyperphysics which relates the magnetic field flux density to the number of turns, the ...
- 11