In a certain region of space there is a uniform magnetic field pointing in the positive z direction (+z). In what direction should a negative point charge move to experience a force in the positive x direction (+x)?
1.in the positive z direction (+z)
2.in the negative z direction (z)
3.in the positive x direction (+x)
4.in the negative x direction (x)
5.in the positive y direction (+y)
6.in the negative y direction (y)
7.It can move in any direction.
8.It is impossible for the force to be in the +x direction when the magnetic field is in the +z direction.
Question 2Consider the following circuits. The batteries and capacitors are identical, and the switches have been closed for a very long time.
At t = 0, both switches are opened. Which
pair of resistors dissipates more total energy?
1.The resistors in A dissipate more energy.
2.The resistors in B dissipate more energy.
3.Both pairs of resistors dissipate the same amount of energy.
4.The amounts of energy dissipated cannot be compared.
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