# ass23 - SOLUTIONS Assignment 23 28.40 = IDENTIFY B nI0 = 0...

This preview shows pages 1–2. Sign up to view the full content.

SOLUTIONS, Assignment 23 28.40. I DENTIFY : 0 0 μ NI Bμ nI L = = S ET U P : 0.150 m L = E XECUTE : 0 (600) (8.00 A) 0.0402 T (0.150 m) μ B = = E VALUATE : The field near the center of the solenoid is independent of the radius of the solenoid, as long as the radius is much less than the length. 28.41. (a) I DENTIFY and S ET U P : The magnetic field near the center of a long solenoid is given by Eq.(28.23), 0 . B nI μ = E XECUTE : Turns per unit length 7 0 0.0270 T 1790 (4 10 T m/A)(12.0 A) B n I π - = = = × turns/m (b) (1790 turns/m)(0.400 m) 716 turns N nL = = = Each turn of radius R has a length 2 R of wire. The total length of wire required is 2 (2 ) (716)(2 )(1.40 10 m) 63.0 m. N R - = × = E VALUATE : A large length of wire is required. Due to the length of wire the solenoid will have appreciable resistance. 28.44. I DENTIFY : Example 28.10 shows that outside a toroidal solenoid there is no magnetic field and inside it the magnetic field is given by 0 . 2

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 2

ass23 - SOLUTIONS Assignment 23 28.40 = IDENTIFY B nI0 = 0...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online