a magnet
a magnet
a magnet...!
A electric current produces a magnetic field
Electric current is a scalar.
electric current (alternating)
a magnet
a magnet
a magnet
a magnet...!
magnet
magnet
Hans Christian Oersted
Hans Christian Orsted
Electric current does not drop. Electric voltage, however, drops across a wire because the wire has non-zero resistance. (Do not confuse electric current with electric voltage - they are not the same.)The reason current does not drop is that, in a series circuit, according to Kirchoff's current law, the current at every point in a series circuit is the same.
There is no one definitive answer to this question. Some possible hypotheses that could be explored include: using electric current to prevent metal from rusting, using electric current to reverse the rusting process, or using electric current to promote the formation of a protective layer on metal that prevents rusting.
Hans Christian Ørsted
Hans Christian Ørsted discovered the relationship of electric current to magnetism.