Flux density?

  • #1
1. an air-core coil consists of 10 layers, and each layer is 11cm long and has 400 turns. the average radius of the layers is 2.25 cm. the flux density within the coil can be closely approximated by using the formula: B=µIN/2r
which of the following best describes this statement?
1) true always
2)True only if the current flow is relatively small
3)false always
4)false only if the current flow is relatively small

..............

2. flux lines are
1)discrete lines of concentrated magnetic force
2)used only to describe the direction of a magnetic field
3)used only to indicate the magnitude of a magnetic field
4)a tool devised by scientists to aid in analyzing magnetic force

my answer is 1 and 2???
 

Answers and Replies

Related Threads on Flux density?

  • Last Post
Replies
9
Views
2K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
1
Views
840
  • Last Post
Replies
1
Views
2K
Replies
4
Views
678
  • Last Post
Replies
6
Views
1K
  • Last Post
Replies
20
Views
10K
  • Last Post
Replies
0
Views
4K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
3K
Top