Which free body diagram represents the moment when the proton enters the magnetic field region?

1
proton
Which free body diagram represents the moment
when the proton enters the magnetic field region?
Construct a free body diagram that represents the
moment when the proton enters the magnetic field
region.
2
An electron is moving to the right across a
magnetic field that is coming out of the page.
Which pictorial representation matches the above
description?
Construct a pictorial representation that matches
the above description.
2
1
3
4 No picture represents this situation
accurately.
3
Which diagram below describes the situation at
point A? (All are at right angles)
Construct a diagram that describes the situation
at point A showing current, B field and the force
of the magnetic field on current.
4
An electron is moving to the right at a constant
speed and enters a magnetic field that is pointed
towards the right.
Which motion diagram matches the above
description?
Construct a motion diagram that matches the above
description.
3
1
4
2
5
5
The current in the top wire is larger then in the
bottom wire.
Which force diagram represents the forces acting
on the wires due to only the magnetic fields?
Construct a force diagram that represents the
forces acting on the wires due to only the
magnetic fields.
1
2
3
6
What is the direction of the magnetic field at
points A and B due to the current in the wire?

• A B
• Into screen Out of screen
• Out of screen Into screen
• Into screen Zero field
• Out of screen Zero field

7
B
A
What is the direction of the magnetic field at
points A and B due to the currents in the wires?

• A B
• Into screen Out of screen
• Out of screen Into screen
• No field Into screen
• No field Out of screen

8
What should be the orientation of the terminals
on the battery?

1. Positive on left, negative on right
2. Negative on left, positive on right
3. Field will not look like this at any orientation,
   it will be out of or into the page.

9
Two carts, initially at rest, have large magnets
on top of them so that the carts move towards
each other. Which description best matches the
above picture?
Two carts, initially at rest, have large magnets
on top of them so that the carts move towards
each other. Write a description that best
matches the above picture concerning each carts
velocity and acceleration.

1. The carts move toward each other with constant
   velocity.
2. The carts move toward each other with constant
   acceleration.
3. The carts will start with constant acceleration,
   but the acceleration will increase once the carts
   are very close.
4. The acceleration of the two carts will constantly
   increase as they move closer together.

10
S
N
Two magnets are hung as seen above. Which
diagram below represents the magnetic field lines?
Two magnets are hung as seen above. Construct a
diagram below that represents the magnetic field
lines.
2
1
4
3