Magnetic Materials
Practice Problems
Music
Magnets and the Earth
Right Hand Rule
100

How many valance electrons do Ferromagnetic Materials have?

2

100

If a wire is next to a perpendicular magnetic field of 0.1 teslas, what is the force on a 2 meter long wire that has a current of 0.2 amps running through it?

0.04 N

100

name the artist

Post Malone

100

Where is earths magnetic south pole?

top of planet

100

What direction does L follow in the right hand rule?

none

200

The name for a collection of crystals in a ferromagnetic material

magnetic domains

200

If a wire is 1.5 meters long, has a current of 0.5 amps, and is pushed with a force of 0.7 newtons, what is the magnetic field?

0.933

200

name the song

deja vu

200

Who is Mr. World Wide?

pitbull

200

If current is going up and the magnetic field is going away from you, where is the force?

Left


300

What property do electrons have that determine the direction of the magnetic field?

spin

300

If a charged pingpong ball is shot towards a perpendicular magnet of 0.3 teslas at 20 meters per second, what is the charge of that pingpong ball given the resulting force is 0.5 newtons. 

0.08333 C

300

name the song

crazy

300

What does earths magnetic field protect us from?

Solar Winds

300

What is the magnetic field to the right of a wire if current is traveling up?

X

400

What is the magnetic field in a current carrying wire an ultimate property of? 

relativity 

400

If a solar wind of 8B protons takes 21 days to hit earths magnetic field at an angle of 80 degrees, what will the resulting force on the wind be? (Earths magnetic field: 0.00005 T, distance between earth and sun: 1.5x10^11 meters) 

0.000000005 N

400

name the artist

eve

400

What causes the current in the earths magnetic field?

Convection

400

Draw the 2nd right hand rule :)

yes