Electro Magnetic Induction And Alternating Currents Question 440

Question: A metal rod of length 2 m is rotating with an angular velocity of 100 rad/sec in a plane perpendicular to a uniform magnetic field of 0.3 T. The potential difference between the ends of the rod is [MP PET 2003]

Options:

A) 30 V

B) 40 V

C) 60 V

D) 600 V

Show Answer

Answer:

Correct Answer: C

Solution:

$ e=\frac{1}{2}Bl^{2}\omega =\frac{1}{2}\times 0.3\times {{(2)}^{2}}\times 100=60V $



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