Transcript What if Anything is Wrong Task - The Magnetic Field of a Long Straight Wire

What if anything is
wrong task on the
magnetic field of a long
straight wire
Task – A long straight wire
carrying a current is oriented
perpendicular to the page. A
compass can be moved around
to show the orientation of the
magnetic field.
A student experiments thoroughly
with the arrangement and draws the
following picture of the orientation
of the magnetic field lines.
What if anything is wrong with
the students diagram?
1
2
3
4
5
So
m
e
er
ot
he
r
ul
d
sh
o
ld
fie
e
an
sw
...
lo
ok
...
in
t
po
ld
fie
e
Th
N
ot
hi
ng
,t
he
lin
e
s
di
ag
4.
Th
3.
25% 25% 25% 25%
i..
.
2.
Nothing, the diagram
is fine
The field lines point
the wrong way
The field should look
like a bar magnet
Some other answer
ra
m
1.
What is the reason for your answer?
2
3
4
5
re
a
he
r
al
So
m
e
ot
ld
s
fie
tic
ag
ne
so
n
...
w
ay
..
th
e.
of
po
le
M
e
Th
1
Th
e
co
no
rth
m
pa
ss
4.
e.
..
3.
25% 25% 25% 25%
ed
l
2.
The compass needle points in
the direction of the magnetic
field
The north pole of the
compass is attracted to the
south
Magnetic fields always look
like bar magnets
Some other reason
ne
1.
How confident are you about
your answer?
2
3
4
5
m
pl
et
e
g
es
ly
gu
gu
es
si
n
si
ng
tra
l
eu
id
e
on
f
tc
m
ew
ha
os
tly
co
1
So
Ve
ry
Co
n
fid
e
5.
N
4.
M
3.
20% 20% 20% 20% 20%
nt
2.
Very Confident
Somewhat
confident
Neutral
Mostly guessing
completely
guessing
nt
1.