JEE Previous Year Question
A 20 cm long metallic rod is rotated with 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 0. 2 T parallel to the axis exists everywhere. The emf developed between the center and the ring is _________mV.
Topic: JEE PYQ
Answer: 88. Full step-by-step solution below.
Correct answer: 88
Solution
(88)The data given is
= 0.2m
B = 0 2T
The emf is given by
= 88mV
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