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電與磁

Science

6th Grade

Used 36+ times

電與磁
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19 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

通電後的線圈與長直電線相比,線圈產生的磁力比較強。

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

電池的方向相同,但是線圈的纏繞方向不同,通電後線圈所形成的磁極和原來的相同。

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

小麗將磁鐵棒放在珍珠板上並使其漂浮在水面,靜止時磁鐵棒的S極會指向什麼方向?

南方

北方

東方

西方

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

線圈數相同時,下列哪一種電池的連接情形會使電磁鐵吸起最多根相同的迴紋針?

一個電池

兩個電池串聯

三個電池串聯

四個電池並聯

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

ㄅ.通電後才有磁性、ㄆ.磁極會改變、ㄇ.磁極不會改變、ㄈ.磁力大小會改變、ㄉ.磁力大小不會改變,哪些是電磁鐵具有的特性?

ㄅㄆㄈ

ㄅㄆㄉ

ㄆㄈㄉ

ㄅㄆㄈㄉ

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

請問哪個才是地磁真正的方向?

1

2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

請問哪個的磁力最強?

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