下列有關各種單位的敘述,何者正確?
107國中自然3下_1-1

Quiz
•
Other
•
7th - 9th Grade
•
Medium

Yu Liu
Used 28+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
焦耳是電能的單位
瓦特是電量的單位
焦耳是電功率的單位
瓦特是電流的單位
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
某一電路的總功率為27瓦特,其流經的電流大小為9安培,則此電路總電源的電壓為多少伏特?
2.25
3
30
243
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
附圖的電路圖中,甲、乙為兩個規格相同的電阻,安培計測得的電流為1安培,當電源電壓為10伏特時,整個電路的總功率為10瓦特,則伏特計測得的電壓值為多少伏特?
5
10
15
20
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
請問電暖器變熱應屬於何種效應的範疇?
電流的磁效應
電流的熱效應
電流的化學效應
靜電效應
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一般的導線為了減少電能的損耗,大都採用有特殊性質的材料製作,而此特殊性質不包含下列何者?
電阻低
發熱少
導電性良好
延性及展性良好
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電器每秒鐘所消耗的電能稱為功率P,請問下列何者為功率的單位?
伏特
庫侖
瓦特
歐姆
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
燈泡與電池利用導線連接起來,燈泡會發出光和熱,試問其中的能量變化為何?
力學能→電能→熱能→光能
電能→化學能→光能→熱能
化學能→力學能→光能→熱能
化學能→電能→熱能→光能
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