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Charges and Currents in Magnetic Fields
Study Guide for Chapter 30
Outline
1. Circular Motion in a Uniform Magnetic Field
A charged particle moving perpendiuclar to a uniform magnetic field will travel in a circle.
The
radius of this circle is given by the formula
where
is the mass of the particle,
is its velocity,
is its charge, and
is the magnetic field.
Problems:
5, 53
2. Force on a Wire
The force of a magnetic field on a segment of currentcarrying wire is given by the formula:
F
L
B
Here
is the current and
is the
(the vector from the beginning of the wire to the
L
length vector
end of the wire).
Problems:
21, 25, 51
3. Torque on a Loop
The
of a loop of current is a vector with magnitude
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This note was uploaded on 11/28/2010 for the course PHY 56705 taught by Professor Turner during the Spring '10 term at University of Texas at Austin.
 Spring '10
 Turner

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