Magnetism and Moving Charges
AP Physics C Electricity and Magnetism · Flashcards · Application
AP PHYSICS C ELECTRICITY AND MAGNETISM · FLASHCARDS
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QUESTION
Calculate the magnetic field due to a long wire carrying 8 A, 0.3 m away.
QUESTION
Calculate the magnetic force on a proton moving perpendicular to a 0.2 T field at
10
7
10^7
1
0
7
m/s.
QUESTION
Calculate the cyclotron radius for a proton,
B
=
0.2
B = 0.2
B
=
0.2
T,
v
=
2
×
10
6
v = 2 \times 10^6
v
=
2
×
1
0
6
m/s.
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ANSWER
r
=
0.1
m
r = 0.1 \, \text{m}
r
=
0.1
m
. Using
r
=
m
v
q
B
r = \frac{mv}{qB}
r
=
q
B
m
v
with proton mass and given parameters.
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