a****e
发帖数: 2064 | 1 There is only one correct answer.
1. A horizontal rod (east-west direction) is moved northward, parallel to
itself, at constant velocity, through a magnetic field that points south.
Which statement is true?
a) the west end of the rod is at higher potential than the east end
b) the east end of the rod is at higher potential than the west end
c) the top surface of the rod is at higher potential than the bottom
surface
d) the bottom surface of the rod is at higher potential than the | s***e
发帖数: 5242 | 2 没有切割磁力线阿。。
to
【在 a****e 的大作中提到】
: There is only one correct answer.
: 1. A horizontal rod (east-west direction) is moved northward, parallel to
: itself, at constant velocity, through a magnetic field that points south.
: Which statement is true?
: a) the west end of the rod is at higher potential than the east end
: b) the east end of the rod is at higher potential than the west end
: c) the top surface of the rod is at higher potential than the bottom
: surface
: d) the bottom surface of the rod is at higher potential than the
| a****e
发帖数: 2064 | | s***e
发帖数: 5242 | 4 还需要别人吗？
【在 a****e 的大作中提到】
: 是啊，我这么认为得.别人还有什么高见吗？
| a****e
发帖数: 2064 | 5
不好意思，没有怀疑您的权威性，呵呵。这是高中老师出的AP题，怕万一理解错了会被
骂的。
【在 s***e 的大作中提到】
: 还需要别人吗？
|
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