康自六上 L4

康自六上 L4

3rd Grade

60 Qs

quiz-placeholder

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康自六上 L4

康自六上 L4

Assessment

Quiz

Other

3rd Grade

Practice Problem

Medium

Created by

Youjiu Youjiu

Used 1+ times

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60 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

電磁鐵通電時,會吸引指北針箭頭的一端是S極,另一端就是N極。

×

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

電熨斗和果汁機都是具有電磁鐵的裝置,所以才能正常運作。

×

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

臺灣在地球的北半球,如果將臺灣的指北針拿到南半球的澳洲,這個指北針就失效了。

×

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

地球本身就像是內部有一個大磁鐵,具有N極和S極,稱為「地磁」。

×

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

通電的電磁鐵不但和磁鐵一樣具有N極和S極,而且改變電流方向,還可以改變電磁鐵的磁極。

×

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

電磁鐵只要通電過一次,就會永久具有磁性。

×

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

電風扇裡面有電磁鐵的裝置,才能帶動馬達,讓風扇旋轉。

×

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