Magnetic Effects Of Current Question 65
Question: A uniform wire is bent in the form of a circle of radius R. A current I enters at A and leaves at C as shown in the figure : If the length ABC is half of the length ADC, the magnetic field at the centre O will be [MP PMT 1997]
Options:
A) Zero
B) $ \frac{{\mu_{0}}I}{2R} $
C) $ \frac{{\mu_{0}}I}{4R} $
D) $ \frac{{\mu_{0}}I}{6R} $
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Answer:
Correct Answer: A
Solution:
See solution 34.