Solenoid coil with magnetized core,both are rotating ,induction in coil or not?
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No induce current will be not produced in coil because relative motion is also required to change its magnetic flux.
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No there will not be induction
Solenoid is made by looping a metal wire around a rod . The metal wire used should we made from the metal which is a good conductor. It generates the magnetic field when current is passed through it.
A solenoid is a helix whose diameter is comparatively very small than its length.
When the current is passed through it a nearly uniform magnetic field is set up in the interior and along the axis of solenoid.
B = u. n I
if you want to increase the magnetic field then can we have to
(i) increases the intensity of current flowing through it
(ii). increase the number of turns per unit length.
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