Author Question: In a certain region of space there is a uniform magnetic field pointing in the positive z direction ... (Read 107 times)

V@ndy87 · **on:** Jul 28, 2018

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 2

Consider 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.