Magnetic Effects Of Current Question 433
Question: The magnetic field at point ‘C’ due to current flowing in ‘M’ shape figure is
Options:
A) $ \frac{{\mu_{0}}}{2\pi }.\frac{\sqrt{3}i}{\ell } $
B) $ \frac{{\mu_{0}}}{\pi }.\frac{i}{\ell }\sqrt{3} $
C) zero
D) $ \frac{{\mu_{0}}}{4\pi }.\frac{i}{\ell \sqrt{3}} $
Show Answer
Answer:
Correct Answer: B
Solution:
[b] B due to $ AB=\frac{{\mu_{0}}}{4\pi }\frac{i}{d}[ \sqrt{3} ] $ $ =\frac{{\mu_{0}}}{4\pi }\frac{i}{\ell /2}[ \sqrt{3} ]=\frac{{\mu_{0}}i}{4\pi \ell }2\sqrt{3} $ Net magnetic field $ =\frac{{\mu_{0}}}{2\pi }\frac{i}{\ell }\sqrt{3}\times 2=\frac{{\mu_{0}}}{\pi }\frac{i}{\ell }\sqrt{3} $
BETA
