HW11 -...

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Unformatted text preview: Physics
3123
­
Homework
11
(due
4/22/11)
 
 
 
 1)
Please
compute
the
time
derivative
of
the
Liénard‐Wiechert
vector
potential
of
a
 moving
point
charge.
(9
points)
 
 
 2)
Consider
the
radiation
contribution
to
the
magnetic
field
of
a
point
charge
q,
 which
moves
nonrelativistically
(v<<c)
on
a
localized
orbit
w(t).
Show
that
the
 magnetic
field
is
identical
to
the
magnetic
field
that
we
found
in
class
for
an

 oscillating
electric
dipole
(in
the
form
of
Griffiths
Eq.
(11.57);
with
the
proper
 definition
of
the
electric
dipole
moment
of
the
moving
charge).
(9
points)
 
 
 3)
Griffiths
chapter
10,
10.23
(6
points)
 
 Extra
credit:
10.25
(6
points)
 ...
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This note was uploaded on 01/22/2012 for the course PHYS 3123 taught by Professor Kindermann during the Spring '11 term at Georgia Institute of Technology.

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