Fields D.4 Electromagnetic Induction (id: ac2151d8a)

admin · 发表于 2024-2-6 17:45:56

本题目来源于试卷: Fields D.4 Electromagnetic Induction，类别为 IB物理学

[单选题]
There are four conductingxm(g*nub 5/cmd f-a- w coih ekzxd ,y/9x(uefufsjvc +s 5;t:5/vls K, L, M, and N. Each loop moves from a region where the magnetic field is zero into a uniform magnetic field, inducifhx,xj5v:t (ussv+9;f /e 5zdceyk/ung either a clockwise or counterclockwise current in the loops. The speed of each coil is given, and the dimensions can be seen from the grid.

Which statement(s) are correct about the instant when the loops enter the magnetic field?
I. The magnitude of induced emf in the coil K equals the emf in coil M.
II. The magnitude of induced emf in coil M equals the emf coil N.
III. The induced current in coil K is in the opposite direction to the induced current in coil L.

A.

I

only
B.

I

and

I I

only
C.

I I

and

I I I

only
D.

I

,

I I

and

I I I

参考答案: B

本题详细解析:

data/attachment/exam/2312/07/2312070108659844.jpg

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