Which free body diagram represents the moment when the proton enters the magnetic field region? 1 3 proton B Field out of screen 2 ponearth F 

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F=BIL Or is it….. F=qvB.

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Which free body diagram represents the moment when the proton enters the magnetic field region? 1 3 proton B Field out of screen 2 ponearth F 

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? No picture represents this situation accurately. 1

Which diagram below describes the situation at point A? (All are at right angles) N S A current B field A 2 current B field A 3 current B field A

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?

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? I I

+ – A B What is the direction of the magnetic field at points A and B due to the current in the wire? AB 1 Into screenOut of screen 2 Out of screenInto screen 3 Into screenZero field 4 Out of screenZero field

I I What is the direction of the magnetic field at points A and B due to the currents in the wires? B A AB 1 Into screenOut of screen 2 Out of screenInto screen 3 No fieldInto screen 4 No field Out of screen

What should be the orientation of the terminals on the battery? 1Positive on left, negative on right 2Negative on left, positive on right 3Field 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 magnets are hung as seen above. Which diagram below represents the magnetic field lines? 1 N S 2 3 4