Magnetic Fields of Current-Carrying Wires
AP Physics C Electricity and Magnetism · Flashcards · Recall
AP PHYSICS C ELECTRICITY AND MAGNETISM · FLASHCARDS
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QUESTION
What does
n
n
n
represent in the solenoid magnetic field formula?
QUESTION
What is the direction of the magnetic field inside a current loop?
QUESTION
State the Biot-Savart Law formula.
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ANSWER
d
B
=
μ
0
4
π
I
d
l
×
r
r
3
dB = \frac{\mu_0}{4\pi} \frac{I d\mathbf{l} \times \mathbf{r}}{r^3}
d
B
=
4
π
μ
0
r
3
I
d
l
×
r
. Fundamental law relating current elements to magnetic field.
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