Bab 6.4 Penggiraan Kos Penggunaan Eletrik

Quiz
•
Science
•
8th Grade
•
Hard
NURSHAFIQA KPM-Guru
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah unit bagi tenaga elektrik?
Watt
Joule
Kilowatt-jam
Volt
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah rumus untuk mengira kos penggunaan elektrik?
Kos = Kuasa × masa × kadar tarif
Kos = Kuasa × kadar tarif
Kos = (Kuasa ÷ masa) × kadar tarif
Kos = Tenaga (kWj) × kadar tarif
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah yang dimaksudkan dengan kecekapan tenaga?
Peratusan tenaga input yang berjaya ditukar kepada tenaga output yang berguna
Ya
Tidak
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah lampu 100 W digunakan selama 5 jam sehari selama 30 hari. Berapakah tenaga digunakan?
10 kWj
15 kWj
12 kWj
20 kWj
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika kadar tarif elektrik ialah RM0.218/kWj, berapakah kos bagi tenaga 10 kWj?
RM2.18
RM0.218
RM21.80
RM1.80
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antara berikut, peralatan manakah paling cekap tenaga?
Peti sejuk 250 W ★
Peti sejuk 180 W ★★★★
Peti sejuk 200 W ★★
Peti sejuk 300 W ★★★
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mengapakah peralatan ★★★★★ dikatakan lebih cekap tenaga?
Lebih murah
Menghasilkan haba lebih tinggi
Menggunakan lebih kuasa
Menggunakan tenaga lebih rendah untuk hasil sama
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