Download Magnetism Worksheet 1

Name:_______________________________Section:_________Date_______
Magnetism
Worksheet 1
1. A proton moves perpendicularly to a magnetic field that has a magnitude of .042 T. What is the
speed of the particle if the magnitude of the magnetic force on it is 2.4 x 10-14 N?
2. A proton traveling to the right along the x-axis enters a region where there is a magnetic field of
magnitude 2.5 T directed upward along the y-axis. Find the speed of the proton if the proton
experiences a force of 3.2 x10-12 N.
3. If an proton experiences a downward force of 2.0 x 10-14 N while traveling in a magnetic field of
0.083 T west, what is the magnitude and direction of the velocity?
4. A uniform 1.5 T magnetic field points into the page. If a proton moves vertically downward
(towards the ground) with a speed of 2.5 x 10-7 m/s through this field, what is the magnitude and
direction of the magnetic force?
5. A particle with a charge of 8 μC moving westward a speed of 45 m/s enters a uniform magnetic
field whose magnitude is 0.30 T directed out of the page. Find the magnitude and direction of
the magnetic force.
6. At a certain location, the horizontal component of the earth’s magnetic field is 2.5 x 10-5 T, due
north (into the page). A proton moves eastward with just the right speed, so the magnetic force
on it balances its weight. Find the speed of the proton. Assume a proton’s mass is 1.67 x 10-27
kg.
7. A particle of charge +7.3 μC and mass 3.8 x 10-8 kg is traveling perpendicular to a 1.6 T
magnetic field directed into the page; the speed of the particle is 44 m/s directed westward.
What is the magnitude and direction, relative to the page, of the resultant force?
Name:_______________________________Section:_________Date_______
8. An electron is moving with a speed of 3.5x105 m/s when it encounters a magnetic field of 0.60 T.
The direction of the magnetic field makes an angle of 60.0° with respect to the velocity of the
electron. What is the magnitude of the magnetic force on the electron?
9.
A proton experiences the greatest force as it travels 3.4 x105 m/s in a magnetic field when it is
moving southward. The force is out of the page and of magnitude 6.8x10-13 N. What is the
magnitude and direction of the magnetic field?
10.
A proton moves to the right with a speed of 4.58 x105 m/s and enters a magnetic field of
2.8 x10-4 T directed into the page. What is the magnitude and direction of the electric field that
will keep the proton traveling in a straight line?
11.
Two electrons are located in a region of space where the magnetic field is zero. Electron A is at
rest; and electron B is moving westward with a constant velocity. A non-zero magnetic field
directed eastward is then applied to the region. In what direction, if any, will each electron be
moving after the field is applied?
12.
A magnetic field is directed into the page through a loop of coil that is on the plane of the page.
a. What is the direction of the induced current from the magnetic field?
b. What is the direction of the induced current if the field direction is reversed?