Magnetic Effects Of Current Question 100
Question: An electron moving in a circular orbit of radius r makes n rotation per second. The magnetic field produced at the centre has a magnitude of [KCET 2001; UPSEAT 2001, 02]
Options:
A) $ \frac{{\mu_{0}}ne}{2r} $
B) $ \frac{{\mu_{0}}n^{2}e}{2r} $
C) $ \frac{{\mu_{0}}ne}{2\pi r} $
D) Zero
Show Answer
Answer:
Correct Answer: A
Solution:
Corresponding current i = en So $ B=\frac{{\mu_{0}}}{4\pi }.\frac{2\pi ( en )}{r}=\frac{{\mu_{0}}ne}{2r} $
BETA
