Magnetic Field of a Long Wire: A long, straight, horizontal wire carries current toward the east. An electron moves toward the east alongside and just south of the wire. What is the direction of the magnetic force on the electron?
A. toward the north
B. toward the south
C. upward
D. downward
E. toward the west
Answer: B
You might also like to view...
Which of the following is believed to have caused the extinction of the dinosaurs on Earth?
a. An asteroid b. A meteoroid c. A comet d. Interplanetary dust
Consider a wire at rest in a magnetic field as shown in the following figure. What will happen to the wire?
a.
A current will flow in the wire.
b.
The wire will be pushed perpendicular to the plane of the magnetic field.
c.
The wire will be pushed toward the north pole.
d.
Nothing will happen.
Detailed mapping of the ocean floors revealed
A) huge mountain ranges beneath the oceans. B) deep trenches near some of the continents. C) that the oceans are equally deep at all locations. D) huge mountain ranges on the ocean floor, and deep trenches near some of the continents.
General Questions: You pull on a crate with a rope. If the crate moves, the rope's pull on the crate must have been larger than the crate's pull on the rope, but if the crate does not move, both of these pulls must have been equal.
A. True B. False