A question about units in equation: Dimensional analysis

  • I
  • Thread starter Goita
  • Start date
  • #1
1
0
This question is about the matching the unites in an equation.

The equation for an electron mobility is given by m^2/V.S.
However substituting the units in the equation, doesn't yield the unit of mobility [m^2/V.S]. I have done the simplification using mks units and didn't come up to m^2/V.S. Have a look at the attached file, and help is appreciated.

Thanks
GH
 

Attachments

  • fff.JPG
    fff.JPG
    32.4 KB · Views: 354

Answers and Replies

  • #2
Baluncore
Science Advisor
8,900
3,492
Welcome to PF.

Dimensional analysis is the truth. The equations may be wrong, or you may be confusing derived units with the fundamental MKSA system.

Try to reduce everything to MKSA. Avoid V, which is = M⋅L2⋅T−3⋅I−1

An electron has charge, where does that appear in the equation with voltage?
https://en.wikipedia.org/wiki/Dimensional_analysis
 

Related Threads on A question about units in equation: Dimensional analysis

Replies
12
Views
1K
  • Last Post
Replies
10
Views
983
Replies
4
Views
1K
  • Last Post
Replies
5
Views
16K
  • Last Post
Replies
6
Views
5K
Replies
2
Views
2K
Replies
3
Views
2K
  • Last Post
Replies
17
Views
1K
  • Last Post
Replies
16
Views
1K
Top