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

1

pon field F

ponearthF

3

pon fieldF

pon earth F

proton

B Field out of screen

v

2

pon fieldF

pon earth F

Construct a free body diagram that represents the Construct a free body diagram that represents the moment when the proton enters the magnetic field moment when the proton enters the magnetic field region.region.

An electron is moving to the right across a magnetic field An electron is moving to the right across a magnetic field that is coming out of the page.that is coming out of the page.

Which pictorial representation matches the above Which pictorial representation matches the above description?description?

1 32

4 No picture represents this situation accurately.

Construct a pictorial representation that matches Construct a pictorial representation that matches the above description.the above description.

Which diagram below describes the situation at Which diagram below describes the situation at point A? (All are at right angles)point A? (All are at right angles)

N S

A

+ -

1current

B field A

currenton magnet F

2current

B field

A

currenton mag. F

3current

B field

currenton magnet F

A

Construct a diagram that describes the situation at Construct a diagram that describes the situation at point A showing current, B field and the force of point A showing current, B field and the force of the magnetic field on current.the magnetic field on current.

An electron is moving to the right at a constant speed and An electron is moving to the right at a constant speed and enters a magnetic field that is pointed towards the right.enters a magnetic field that is pointed towards the right.

Which motion diagram matches the above Which motion diagram matches the above description?description?

1

4

3

52

Construct a motion diagram that matches the Construct a motion diagram that matches the above description.above description.

The current in the top wire is larger then in the bottom wire.The current in the top wire is larger then in the bottom wire.

Which force diagram represents the forces acting Which force diagram represents the forces acting on the wires due to only the magnetic fields? on the wires due to only the magnetic fields?

1 32

I

I

toponbot.F

bot.ontopFbot.ontopF

toponbot.F

bot.ontopF toponbot.F

Construct a force diagram that represents the Construct a force diagram that represents the forces acting on the wires due to only the magnetic forces acting on the wires due to only the magnetic fields.fields.

+ –

A B

What is the direction of the magnetic field at points What is the direction of the magnetic field at points A and B due to the current in the wire? A and B due to the current in the wire?

A B

1 Into screen Out of screen

2 Out of screen Into screen

3 Into screen Zero field

4 Out of screen Zero field

I

I

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

B

A

A B

1 Into screen Out of screen

2 Out of screen Into screen

3 No field Into screen

4 No field Out of screen

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

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?

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.

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.

Two magnets are hung as seen above. Which diagram below represents the magnetic field lines?

1

NS

2

3 4

Two magnets are hung as seen above. Construct a diagram below that represents the magnetic field lines.