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Commercial electric motors do not use

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asked Jun 25, 2017 in Physics by Kundan kumar (49,132 points) ● 34 ● 437 ● 1374
(a) an electromagnet to rotate the armature
(b) effectively large number of turns of conducting wire in the current carrying coil
(c) a permanent magnet to rotate the armature
(d) a soft iron core on which the coil is wound

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answered Jun 25, 2017 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 26
selected Jan 30, 2018 by faiz
 
Best answer
(c) a permanent magnet to rotate the armature
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