Magnetic Fields
AP Physics C Electricity and Magnetism · Flashcards
AP PHYSICS C ELECTRICITY AND MAGNETISM · FLASHCARDS
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QUESTION
Calculate torque on a loop with
A
=
0.1
m
2
A = 0.1m^2
A
=
0.1
m
2
,
I
=
5
A
I = 5A
I
=
5
A
, in
B
=
0.2
T
B = 0.2T
B
=
0.2
T
.
QUESTION
Identify the effect of a magnetic field on a magnetic dipole.
QUESTION
What is the formula for the energy density of a magnetic field?
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ANSWER
u
=
B
2
2
μ
0
u = \frac{B^2}{2\mu_0}
u
=
2
μ
0
B
2
. Energy stored per unit volume in magnetic field.
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