Kecekapan Tenaga ting 3

Quiz
•
Science
•
3rd Grade
•
Medium
Cikgu Din
Used 15+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Pilih perkataan yang sesuai untuk tempat kosong.
Peratus _____yang diubah kepada bentuk _____yang berfaedah.
Tenaga elektrik.....tenaga haba
Tenaga output....tenaga input
Tenaga input...tenaga output
Tenaga haba....tenaga elektrik
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebiji mentol dibekalkan dengan 100 J tenaga elektrik yang ditukarkan kepada 45 J tenaga cahaya.
a) Berapakah tenaga elektrik yang terbazir?
35 J
45 J
55 J
65 j
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
b) Dalam bentuk apakah tenaga elektrik terbazir?
Tenaga kinetik
Tenaga keupayaan
Tenaga haba
Tenaga nuklear
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Formula bagi kecekapan tenaga ditunjukkan di bawah.
Kecekapan tenaga = ((tenaga output yang berfaedah) ÷ (tenaga input yang dibekalkan)) x 100%
Hitungkan kecekapan tenaga mentol di soalan 2?
25%
35%
45%
55%
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Anda dibekalkan dengan 3 jenis lampu di pasaran yang menghasilkan kecerahan yang sama. Sebagai saorang pengguna yang bijak. Lampu manakah yang anda pilih?
Lampu berfilamen 100W
Lampu jimat tenaga 14 W
Lampu LED 20 W
Lampu LED 10W
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