Practice Quiz 1
Two wires carry different amounts of current either into or out of the plane of this page, as shown at right. At location X1, there is no total magnetic field due to these wires. Note the 10 cm scale bar.)
a. Determine the direction of the total magnetic field at location X2 (i.e. up, down, left, right, etc.) and explain how you know.
upwards because the field from the
b. Did you need to use RHR2 to answer the above question? Why, or why not?
Practice Quiz 2
Electrons flow within a tube (similar to a CRT or electron gun) as a result of an electric field created by charges placed at each end of the tube. A magnetic field B is present inside the tube, created by some external source.
(I)
(II)
(III)
(IV)
Choose the diagram that correctly depicts the path taken by the electrons as they travel through the tube. You may neglect gravity in this problem. Explain your choice.