A wire carries current in the plane of this paper toward the top of the page. The wire experiences a magnetic force toward the right edge of the page. The direction of the magnetic field causing this force is:
A: in the plane of the page and toward the left edge.
B: in the plane of the page and toward the bottom edge.
C: upward out of the page.
D: downward into the page.
A: in the plane of the page and toward the left edge.
B: in the plane of the page and toward the bottom edge.
C: upward out of the page.
D: downward into the page.
举一反三
- An electron moves in the plane of this paper toward the top of the page. A magnetic field is also in the plane of the page and directed toward the right. What is the direction of the magnetic force on the electron? A: toward the top of the page B: toward the bottom of the page C: upward out of the page D: downward into the page
- Links are ____ or _____ in one page that connect to another page or a different location within a single page.
- A _____ is a link on a Web page that leads to another Web page.
- There exists an induced current flowing clockwise in the conducting loop shown in Figure. What is the direction of the magnetic field through the loop and how does the field vary in magnitude?[img=111x83]1803a3760763dd5.png[/img] A: Into the page and increasing. B: Into the page and decreasing. C: Into the page and steady. D: Out of the page and decreasing.
- The page number is shown _____ the foot of the page. A: at B: in C: form D: Under