電與磁
Quiz
•
Science
•
6th Grade
•
Practice Problem
•
Medium
Used 36+ times
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19 questions
Show all answers
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。
對
錯
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。
對
錯
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
請問哪個才是地磁真正的方向?
1
2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
請問哪個的磁力最強?
ㄅ
ㄆ
ㄇ
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