Charge
is distributed within a sphere of
radius R with a volume charge density
P(r) = A/r²e‐2r/a, where A and a are constants.
If Q is the total charge of this charge
distribution, the ractius R is.
t
Answers
Answered by
0
Explanation:
Q=∫ρdv
=∫
0
R
r
2
A
e
−2r/a
(4πr
2
dx)
4πA∫
0
R
e
−2r/a
dx
=4πA
⎝
⎜
⎜
⎛
−
a
2
e
−2r/a
⎠
⎟
⎟
⎞
=4πA(−
2
a
)(e
−2R/a
−1)
Q=2πaA(1−e
−2R/a
)
R=
2
a
log
⎝
⎜
⎜
⎛
1−
2πaA
Q
1
⎠
⎟
⎟
⎞
Similar questions