26The formula for calculating EMF, also state what the variables are.
27L is the length of the conductor vBLv is the velocityB is the field strengthL is the length of the conductor
28A permanent horseshoe magnet is mounted so that the magnetic field lines are vertical. If a student passes a straight wire between the poles and pulls it toward herself, the current flow through the wire is from left to right. Which is the N – pole of the magnet?