1. No category

Magnetism
S432 Name ---------------------
Are YOU S100c
on v. ~
1. A proton moves horizontally and enters a region where there is a unifonn magnetic field
perpendicular to the proton's velocity as shown below. Describe the proton' s subsequent
motion.
x
•
x
r ~ r::;
"7 -
x
)
x
x
X
Q
! (;/J:::
<-­
.
I V
~
tk·
-X­I? Y
'?"VVI
X
How would an electron act under the same circumstances? Draw the vector diagram to
support your answer.
k~ w1f'/l ~
2. Find the direction of the magnetic field for a
situation below. b)
a) c)
F
X F
3.
Find the direction of the force on a proton moving through each magnetic field below.
vI
v
A)
X
X
X
~X
X
X
rC-
v
X
X
X
X
X
•
B)
•r
r
X
-
Find the direction of the force on ~oving through each magnetic field shown
below.
A)
B)
••••
4.
v
.,­
,
v
. ... - ,.
P
I
~ F d(7Wv<
.
!. .
••••
·r· • •
~(---------------
VlftJ f~ <J)
A wire carries a 10.0 A current moving south. If the magnitude of the magnetic force on
a5.0 m length of wire is 15 .0 N directed into the page, what is the magnitude and
CJ
direction of the magnetic field? ,/S~N l?'
Ar-:-f
-:: l~ ;:-~
1..
)
I
0'
p-=-
--1>\ [,O-jft-)
() "'] '-,
1""7
A thin 1.00 m long copper rod in a unifonn magnetic field has a mass of 50.0 grams.
When the rod carries a current of 0.245 A, it floats in the magnetic field. What is the
magnetic field strength? (HINT: Draw an FBD.)
B::'.£::-
.::: .~-/v
r;- (;r-..~ ""
/t
7.
~
1-ilJ~ / ....,
2-.o,/T
L
A duck flying due east passes over Atlanta, where the magnetic field of the Earth is
5.0 x 10- 5 T directed north. The duck has a positive charge of 4.0 x 10-8 C. If the
magnetic force acting on the duck is 3.0 x 10-11 N eastward, what is the magnitude and
t r
1"",
direction of the duck's velocity? r..: ;~~ tr
fd
L
v~~~
{S~,
U
--; ")/
LlY_
>/'Ii>,
L.
,_ ~)
f ,xI I)
~ /S"7>
_
VV
l3
r;::'
V
cN 1
6 7~
8. A proton has a mass of 1.6 x 10-27 kg and moves at a speed of2.0 x 107 m1s perPelliITCular to a magnetic field with a magnitude of 0.1OT.
Find the magnitude of the
a£celeration of the proton. r-NA{ -c /111?
.­
~ r z. [0
V -::: C)
I"?
) T (j .t 1'1 '0
.- I">
-=- ') . L;YO
#
lit
L
I
. \
l:._ . ,I
.
L-)Y't> ....;
>