- #1
oportunity
- 9
- 0
Homework Statement
http://imageshack.us/photo/my-images/194/55132039.png/
http://imageshack.us/photo/my-images/194/55132039.png/
How much curret flows trough circuit ABCD when the center of the circuit (O) is distance r from the straight wire? I think these are the relevant equations:
∅=B.dS
E=-d∅ /dt
B= μoI/2∏r
But i have trouble with dS. i know that is has to be rewritten like e.g. ds= ydx=yvdt and that way eliminate dt
but in this case i don't know how to do it.
Thanks