When the current through the coil of an electromagnet reverses, the :

(a) direction of the magnetic field reverses
(b) direction of the magnetic field remains unchanged
(c) magnetic field expands
(d) magnetic field collapses

 

Anurag Mishra Professor Asked on 1st February 2016 in Physics.
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    Answer: (a) direction of the magnetic field reverses 

    Anurag Mishra Professor Answered on 21st May 2016.
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