1. Tardigrade
  2. Question
  3. Physics
  4. A 1 m long metallic rod is rotated with angular frequency of 400 rad s -1 about an axis normal to the rod passing through one of its end. The other end of the rod is in contact with a circular metallic ring. A constant and uniform magnetic field of 0.5 T parallel to axis exist everywhere. The emf induced between centre and ring is

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Q. A $1\, m$ long metallic rod is rotated with angular frequency of $400\, rad s ^{-1}$ about an axis normal to the rod passing through one of its end. The other end of the rod is in contact with a circular metallic ring. A constant and uniform magnetic field of $0.5\, T$ parallel to axis exist everywhere. The emf induced between centre and ring is

Solution:

Correct answer is (b) 100 V