Question

An electron in an atom is revolving round the nucleus in a circular orbit of radius 5.3 × 10−11m, with a speed of 2 × 106 m/s. Find the angular momentum of electron.

Answer 1

The formula of magnetic moment is M=NIA
where N=no. of turns=1
I=Current,
A=Area
M=NIA
=IA⇒
t
q
​
A=⇒=Qfa(
t
1
​
=frequency)
=1.6×10
−19
×6.8×10
9
×10
6
×π×0.53×10
−10
(1A
0
=10
−10
)
=5.766×π×10
−19+9+6−10

=18.10×10
−14
A−m
2



If not then add ur values


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Answer 2

This is how I did, hope it helps.