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Induction of Magnetic Fields
Study Guide for Section 33.1
Just as a changing magnetic field can induce an electric field, a changing electric field can induce
a magnetic field.
This induced field obeys the following equation:
closed
loop
BL
This equation is similar to Ampère's law, except that
has been substituted in for the
current.
This quantity is known as
:
displacement current
Displacement current is measured in amps (A), just like real current.
However,
displacement
current is not actual current, it is just a changing electric field
.
We only think of it as current
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 Spring '10
 Turner

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