# Quiz04 - Physics 222 Fall 2011 Name Section Quiz 4A...

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Physics 222 Fall 2011 Name:_______________ Section:______________ Quiz 4A Magnetic Force: B l I F B v q F B B × = × = θ sin sin IlB F qvB F B B = = 1) There is a constant magnetic field in the +z direction. a) An electron is moving in the +x direction. What is the direction the magnetic force on the electron? b) What is the magnitude and direction of the magnetic force if the velocity of the electron and the magnetic field are parallel? 2) A wire with current of 2.0 A is oriented in the +z direction. This wire is positioned in a 3.0 T magnetic field. The magnetic field is directed at 30 degrees from the z-axis and is in z-y plane as shown in the figure below. What is the magnitude and the direction of the force felt by a 1.0 m section of the wire?

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Physics 222 Fall 2011 Name:_______________ Section:______________ Quiz 4B Magnetic Force: B l I F B v q F B B × = × = θ sin sin IlB F qvB F B B = = 1) There is a constant magnetic field in the +z direction. a) A proton is moving in the +x direction. What is the direction the magnetic force on the
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Quiz04 - Physics 222 Fall 2011 Name Section Quiz 4A...

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