Magnetic Effects Of Current Question 46
Question: In hydrogen atom, an electron is revolving in the orbit of radius $ 0.53,{AA} $ with $ 6.6\times 10^{15} $ rotations/second. Magnetic field produced at the centre of the orbit is [MP PET 2003]
Options:
A) $ 0.125,wb/m^{2} $
B) $ 1.25,wb/m^{2} $
C) $ 12.5,wb/m^{2} $
D) $ 125,wb/m^{2} $
Show Answer
Answer:
Correct Answer: C
Solution:
$ B=\frac{{\mu_{0}}}{4\pi }\cdot \frac{2\pi (q\nu )}{r} $ $ ={{10}^{-7}}\times \frac{2\times 3.14\times (1.6\times {{10}^{-19}}\times 6.6\times 10^{15})}{0.53\times {{10}^{-10}}} $ $ =12.5,Wb/m^{2} $
BETA
