Magnetic Effects Of Current Question 75
Question: The magnetic field at the centre of current carrying coil is [CPMT 1996; RPET 2002, 03]
Options:
A) $ \frac{{\mu_{0}}ni}{2r} $
B) $ \frac{{\mu_{0}}}{2\pi }\frac{ni}{r} $
C) $ \frac{{\mu_{0}}ni}{4r} $
D) $ {\mu_{0}}ni $
Show Answer
Answer:
Correct Answer: A
Solution:
Magnetic field at the centre of current carrying coil is $ B=\frac{{\mu_{0}}}{4\pi }\cdot \frac{2\pi ni}{r}=\frac{{\mu_{0}}ni}{2r} $
BETA
