1
A uniformly charged rod has a
finite
length
L
. The rod is symmetric under
rotations about the axis and under
reflection in any plane containing the
axis. It is
not
symmetric under
translations or under reflections in a
plane perpendicular to the axis other
than the plane that bisects the rod.
Which field shape or shapes match
the symmetry of the rod?
1. a and d
2. c and e
3. b only
4. e only
5. none of the above
This box contains
1. a net positive charge.
2. no net charge.
3. a net negative charge.
4. a positive charge.
5. a negative charge.
The total electric flux through this box is
1. 0 Nm
2
/C.
2. 1 Nm
2
/C.
3. 2 Nm
2
/C.
4. 4 Nm
2
/C.
5. 6 Nm
2
/C.
These are twodimensional cross sections through
threedimensional closed spheres and a cube. Rank
order, from largest to smallest, the electric fluxes
a
to
e
through surfaces a to e.
1.
Φ
a
>
Φ
c
>
Φ
b
>
Φ
d
>
Φ
e
2.
Φ
b
=
Φ
e
>
Φ
a
=
Φ
c
=
Φ
d
3.
Φ
e
>
Φ
d
>
Φ
b
>
Φ
c
>
Φ
a
4.
Φ
b
>
Φ
a
>
Φ
c
>
Φ
e
>
Φ
d
5.
Φ
d
=
Φ
e
>
Φ
c
>
Φ
a
=
Φ
b
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview.
Sign up
to
access the rest of the document.
 Spring '08
 Cardenas
 Electric charge, rod, total electric flux

Click to edit the document details