main

prev        

Statement of a problem № 41998

        next    

A straight 2.00-m, 150-g wire carries a current in a region where the earth s magnetic field is horizontal with a magnitude of 0.55 gauss. (a) What is the minimum value of the current in this wire so that its weight is completely supported by the magnetic force due to earth s field, assuming that no other forces except gravity act on it? Does it seem likely that such a wire could support this size of current? (b) Show how the wire would have to be oriented relative to the earth s magnetic field to be supported in this way.




New search. (Also 5349 free access solutions)