- #1
Questions999
- 151
- 0
Homework Statement
The conductive bar CD with a length of 20 cm and resistance R, moves with speed v=5 m/s. The magnetic field is perpendicular with the plan and the induction is B=2 T.
The mass of the object in the figure is m=80 grams and g=10 m/ s^2
a) find the direction and the intensity of the induced current that moves in CD
b) The resistance of this bar
Homework Equations
Figure : http://s1171.photobucket.com/albums/r549/Elaia06/?action=view¤t=hrtfg.jpg
The Attempt at a Solution
I tried using Emf=B*L*v and then I=emf/R but i don't know the R..
I JUST WANT TO KNOW HOW TO RELATE Tension and weight with induction//