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 $
