Physics · Electromagnetic Induction
A 20 cm long metallic rod is rotated at 210 rpm about an axis normal to the rod passing through its one end. The other end of the rod is in contact with a circular metallic ring. A constant and uniform magnetic field of 0.2 T parallel to the axis exists everywhere. The emf developed between the centre and the ring is ________ mV. (Take π = 227)
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