Lecture 6 - QuesJon
1:
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1:
 











 A
constant
electric
field





 is
present
throughout
a
region
 of
space
that
includes
the
plane
bounded
by
the
x
and
y
axes
and
the
 lines
x
=
30cm
and
y
=
50cm.
The
electric
flux
at
the
plane’s
surface,
in
 N/C,
is
 A.
 
0
 B. 
0.25
 C. 
25
 D. 
50
 E. 
100
 ApplicaJon
of
Gauss’s
Law
 Infinite
uniformly
charged
line
 λ

[C/m]:
Charge
per
unit
area
 r
 ApplicaJon
of
Gauss’s
Law
 Charge
distribuJon
has
cylindrical
symmetry
 λ

[C/m]:
Charge
per
unit
area
 r
 E ˆ E= Er Step
1:
Define
surface
such
that

 
1) 
E • n 
is
constant
through
out
the
surface

 
ˆ Or



2)



 
• n
 
is
zero
through
out
the
surface

 Eˆ L
 3
 1
 2
 Surfaces
1
and
3
 3
 1
 2
 Electric
field
is
always
parallel
to
the
surface
 Flux
through
these
surfaces
are
zero
 ...
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This note was uploaded on 07/16/2011 for the course PHY 2049 taught by Professor Saha during the Fall '08 term at University of Central Florida.

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