Solenoid Flashcards
1
Q
What is a solenoid?
A
A helical winding of wire
2
Q
What can we neglect for a solenoid?
A
End effects as the solenoid is long
3
Q
What is the solenoidal condiciton?
A
◯∫∫B⋅dS= 0
Thus B_R=0
4
Q
What is the magnetic field outside a solenoid?
A
Zero
5
Q
What is the symmetry for a solenoid?
A
No axial current so B_φ=0
6
Q
What is the magentic field for a solenoid?
A
Outside: zero
Inside: μ0nIẑ
