- Joined
- Aug 27, 2014
- Messages
- 132
- Reaction score
- 18
I'm confused on how the rod changes its area once it's inside the magnetic field. Can someone clarify this?
For number 4 Also since it's an electron and it the force is likely to point downward , i don't get how the direction is pointing counterclockwise . The Berkeley review says current is a flow of positive charge and I know electrons are negative . I'm just having a hard time seeing direction of currents