1) In order to levitate at this minium current, what angle should the current in the wire be flowing? 2) Assume the wire is carrying this minimum current, but now the strength of the magnetic field suddenly changes to 1.02 T. What is the magnitude of the acceleration of the wire immediately after the change in field strength?
3) What will be the direction of this acceleration immediately after the change in field strength?
4) A wire with a length of 3.5 meters and a mass of 0.7 kg is in a region of space where is there is a magnetic field with a strength of 0.84 T. What is the minimum current needed to levitate the wire?

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Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.