
9上自然習作ch3-4~ch4-4
Quiz
•
Physics
•
9th - 12th Grade
•
Medium
林 炳弘
Used 8+ times
FREE Resource
36 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如附圖,煜清利用定滑輪,施一力 F 將重量為 M 的物體,以等速度提升 h 的高度,若不計任何摩擦阻力,請問下列敘述何者正確?
定滑輪為省力的機械
使用定滑輪無法改變施力的方向
改用半徑愈大的定滑輪,則可愈省力
施力所作的功等於物體增加的重力位能
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
使用如附圖的甲、乙兩滑輪,等速抬起質量相同的物體時,若兩滑輪重量及摩擦阻力可忽略不計,請問 F1 和 F2 的大小關係為何?
F1=F2
2F1=F2
F1=2F2
F1=4F2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
輪軸是一種槓桿的變形,若施力在軸上,可達何種工作效果?
費力費時
省時費力
省力費時
僅有旋轉效果。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
生活中有許多物品都是簡單機械的應用,幫助我們能更方便的完成事情,下列對於各種物品應用的原理描述,何者錯誤?
喇叭鎖是輪軸的應用,可以省力
寶特瓶蓋是螺旋的應用,可以省力
斜面搬運距離較長,無法省力
易開罐拉環是槓桿的應用,可以省力。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下圖為兩種開瓶器,生活中常利用這種簡單機械來打開瓶蓋。下列選項的描述,何者錯誤?
(甲)運用的簡單機械原理包含槓桿原理
(甲)(乙)兩者都是省力的工具
(乙)運用的簡單機械原理包含斜面
(甲)操作時,施力臂小於抗力臂。
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一電路如附圖,若兩相同燈泡並聯,通過其中一個燈泡之電流為 2 安培,則通過電池的電流為多少安培?
0.5 A
2 A
3 A
4 A
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
甲、乙、丙三條電阻線通電時的電壓 V 與電流 I 之關係如圖所示。假設這三條是由相同的材料製成,他們長度相同,粗細不同,截面積分別為 A甲、A乙、A丙,且圖中的三條線皆為直線,則下列關係何者正確?
A甲>A乙>A丙
A甲=A乙=A丙
A乙>A甲>A丙
A丙>A乙>A甲
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