Let A be the vector potential and B the magnetic field of the infinite solenoid of radius R. Then 0 Bk B(r) = if r> R if r < R where r = √√x² + y2 is the distance to the z-axis and B is a constant that depends on the current strength I and the spacing of the turns of wire. The vector potential for B is A(r) = R²B (3.0) if B(-y, x,0) (18²8) r> R if r < R
Let A be the vector potential and B the magnetic field of the infinite solenoid of radius R. Then 0 Bk B(r) = if r> R if r < R where r = √√x² + y2 is the distance to the z-axis and B is a constant that depends on the current strength I and the spacing of the turns of wire. The vector potential for B is A(r) = R²B (3.0) if B(-y, x,0) (18²8) r> R if r < R
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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
Transcribed Image Text:Let A be the vector potential and B the magnetic field of the infinite solenoid of radius R. Then
{
B(r) =
A(r) =
√x² + y2 is the distance to the z-axis and B is a constant that depends on the current strength I and the spacing of
where r =
the turns of wire.
The vector potential for B is
S
0
Incorrect
Bk if
Jc
if r> R
r<R
(R²B (-2,0) if
if r> R
B(-y, x,0)
if <R
(a) Use Stokes' Theorem to compute the flux of B through a circle in the xy-plane of radius = 6 < R.
(Use symbolic notation and fractions where needed.)
B.dS=
R
A dr =
2
Вп п
(b) Use Stokes' Theorem to compute the circulation of A around the boundary C of a surface lying outside the solenoid.
(Use symbolic notation and fractions where needed.)
S
0
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