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when voltage gets down the current of motor increases. but
according to Ohm's law voltage is directly proportional to
current. plz explain
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Answer Posted / rohit kumar jha
Two type of emf's are there in motor, first one is due to the
magnetic field set up by the stator and second one is due to
the current flowing in the armature(rotor).
Due to the first emf, a current is set up in the armature,
which is resisted by the current due to the supplied
voltage.As the voltage value decreases the current decreases,
which decreases the resistance to the first current(as both
are opposite in direction), hence the value of current
increases.
It's really a nice and a tricky question :))))
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