Electromagnetic Induction and Alternating Current 7 Question 8
8. A thin flexible wire of length is connected to two adjacent fixed points and carries a current in the clockwise direction, as shown in the figure. When the system is put in a uniform magnetic field of strength going into the plane of the paper, the wire takes the shape of a circle. The tension in the wire is
(2010)
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 8. (c)
Solution:
For small angles,