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電與磁 指北針

Authored by 羅正暄 羅正暄

Science

5th Grade

Used 3+ times

電與磁 指北針
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8 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

指北針的指針箭頭指向北方的一端稱為什麼?

S極

正極

N極

負極

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

指北針的指針具有磁性,它是由哪一種材料製作而成的?

磁鐵

鋁片

礦物

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

地球本身就是一個大磁鐵,下列關於地球和地磁的敘述,哪一項不正確?

地磁N極靠近地球北方

地磁N極會吸引指北針的S極

地磁S極靠近地球北方

地磁S極會吸引指北針的指針箭頭

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

將磁鐵棒靠近指北針,指針會產生偏轉,哪一個圖的偏轉情形是正確的?

Media Image
Media Image
Media Image
Media Image

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

將通電的電線沿著南北方向放在指北針上面,指針會向西偏轉,若改變電池正、負極的連接方向,指針箭頭如何偏轉?

不會偏轉

向西偏轉

向東偏轉

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

為什麼要將漆包線兩端表面的漆刮除?

美觀

增加磁力

幫助通電

幫助辨識磁極

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

如圖通電後,指針會如何偏轉?

向西偏轉

向東偏轉

不會偏轉

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