1. Magnetism Magnetism Lecture 15 Today 27.1-5 Magnetic Fields
Forces on moving charges
Magnetic Flux
Monday ,
Magnetism
Magnetic Forces on Wires
Magnetic Fields due to Moving Charges and Currents 1

2. Example: Force on a moving charge
A particle with charge x 10-8 C is moving with
velocity v= 4.19 x 104 m/s i x 104 m/s j .
What is the force exerted on this particle by a magnetic field B = 1.4 T i ? ^ ^ ^
From 27.1 in text.

3. Example: Electron in a uniform B field
An electron, starting at rest, is accelerated
by a potential difference of 400 volts.
Find the speed of the electron, v.
The electron enters a uniform magnetic field
with magnitude B, moving in a direction
perpendicular to the magnetic field. Find the
radius of the orbit, R, of the electron in terms
of e, B, me, and v.

4. Magnetism Magnetism Lecture 15 Today 27.1-5 Magnetic Fields
Forces on moving charges
Magnetic Flux
Monday ,
Magnetism
Magnetic Forces on Wires
Magnetic Fields due to Moving Charges and Currents 4