yes we can produce magnetic field in varying alternative current.ie one magnetic field rottate a solinoid or a solinoid rottate amagnetic field-Then produce of emf in a solinoid.Another one the alternate current through a conductor is maintain a strong magnetic field arround the conductor. these is common procedure of electricity.BY SHAJAN PANIKAR A SENIOR ELECTRONICS ENGINEER FROM PUNE INDIA.NOW LIVING IN QATAR DOHA.
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