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If a fragment from an asteroid falls to Earth and a static electric charge is built up as the fragment falls, does it generate a magnetic field? If so, why does it happen?
Question Date: 2012-02-28
Answer 1:

Magnetic fields are generated by moving charges. This is easier to visualize when the charges are moving through a wire as a current but it would still be true for the meteorite. Though it may not be a popular to study in a physics class as the force on a particle moving in a magnetic field, the field produced by a free electron can be described in terms of the size of the charge, the velocity and the acceleration on the electron. This model for a free charge can work for the meteorite.

Hope this helps.

Answer 2:

Yes, it does - it's a moving electrically-charged object, so it causes magnetic field lines to form around it as it moves.

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