What are force and field and force and current/velocity?
100
If we break a magnet in half, what happens to the two pieces?
What is, they each become smaller magnets?
100
A coil of wire which produces a magnetic field when electricity flow through it.
What is an electromagnet?
100
If a current carrying loop is placed in a magnetic field, what will happen?
What is torque?
200
Theta is an angle measured between what two vectors?
What are v & B or I & B
200
What is the biggest magnet that we know of?
What is the Earth?
200
To increase the strength of an electromagnet, what is one thing you can do?
What is increase current, increase # of coils, change the geometry of the magnet
200
This is a proposed carrier of only one magnetic pole?
What is a magnetic monopole?
300
A wire carries a current into the -z direction, what direction is the magnetic field around the wire?
What is clockwise?
300
What is the most common metal that composes ferromagnets?
What is iron?
300
The strongest magnets on Earth are superconducting magnets for what main reason?
What is low resistance allows for more current?
300
Mr Lockwood did research as an undergrad in what area of Physics?
What is ultrasonic acoustic levitation?
400
An electron moving in the positive x direction encounters a magnetic field in the -z direction. Which direction does it experience a force?
What is the negative y direction?
400
Magnetic North is at what geographic location on the Earth?
What is geographic south pole?
400
A 1.2m wire carries a current of 1200A perpendicular to the magnetic field of 2.3T. What is the force felt by the wire?
What is 3312N
400
This is Mr. Lockwood's favorite branch of physics.
What is acoustics?
500
A current carrying wire is exposed to a magnetic field in the +x direction. This wire feels a force in the -z direction. What is the direction of current in the wire?
What is the +y direction?
500
Draw the magnetic field of a simple bar magnet, include field line directions.
N -------------> S
500
A positron is shot into a magnetic field (B= 1.2T) with a velocity of 2.3x10^6 m/s. The angle between the field and positron's velocity is 32 degrees. What force is felt by the positron?
What is 2.34 x 10^-13 N
500
How does an MRI work
What is by aligning magnetic dipole moments and knocking them off balance and measuring energy released.