- #1

conov3

- 34

- 0

At what distance (in m) from a very thin, straight wire carrying a 38 A current would the magnetic field strength be the same as a refrigerator magnet of 4.35 x 10-3 T?

2. Homework Equations

B=(μo/2pi)*(I/d)

where μo=4pi*10^-7

3. The Attempt at a Solution

4.35e-3(d)=2.0e-7*(38)

d=.0017m

It says this is wrong? so I must have done something wrong.. any help would be appreciated!

Thanks for your time!