MT2--2007-Answers

MT2--2007-Answers - Answers
MT2
–
2007
...

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MT2
–
2007
 1.
(a)

 
B
=
2.0
x
10^(‐4)
Tesla
(
into
the
page
=
‐k
)
 1.
(b)
 F
=
3.2
x
10^(‐17)
Newtons
(
downwards
=
‐j
)
 1.
(c)

 Work
=
0,


 Kinetic
Energy
=
4.55
x
10^(‐19)
Joules
 2.
(a)


 Using
the
RH
rule
the
z
component
of
B_total
=
0
along
the
line
with
slope
I2/I1
in
sectors
I
and
III.
 However,
since
the
two
lines
are
not
in
the
same
plane
there
are
always
non‐zero
x
and
y
components
of
B.
 Hence
B_total
=
0
only
at
r
=

infinity.
 2.
(b)

 B_total
=
{
5.0
i
–
6.67
j
}
x
10^(‐6)
Tesla
 3.
(a)
 I1
=
0.55
mA,

I2
=
0.33
mA,

I3
=
0.22
mA
 3.
(b)

 I3
=
0,


 I1
=
I2
=
0.40
mA
 3.
(c)

 I(t)
=
{0.16
mA}
exp
(‐
t/32.5
)
where
t
is
given
in
seconds.
 ...
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This note was uploaded on 02/03/2010 for the course PHYS PHYS 153 taught by Professor Billmcutcheon during the Spring '09 term at UBC.

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