Ankit Gupta Posted March 8, 2013 Posted March 8, 2013 can we produce heat by rubbing same poles of magnet like north and north ?
swansont Posted March 8, 2013 Posted March 8, 2013 can we produce heat by rubbing same poles of magnet like north and north ? In some cases, certainly. It's usually done with a magnetic field and a conductor, but you could get eddy currents in conductive magnetic materials.
Ankit Gupta Posted March 9, 2013 Author Posted March 9, 2013 but my brother told me that magnetic field can never do work
swansont Posted March 9, 2013 Posted March 9, 2013 but my brother told me that magnetic field can never do work It doesn't. A changing magnetic field induces an electric field, which causes the current. The electric field does the work.
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