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MODUL • Fizik TINGKATAN 5

5 Rajah 5 menunjukkan dua magnet, J dan K, tergantung 7 Rajah 7 menunjukkan struktur binaan motor elektrik.
bebas di kedua-dua hujung solenoid. Diagram 7 shows the structure of an electric motor.
Diagram 5 shows two magnets J and K, hang freely at both
ends of the solenoid.
N S

N S S N Rajah 7 / Diagram 7
Magnet J Magnet K Corak medan magnet yang manakah betul apabila suis
Magnet J Magnet K
lampu dihidupkan?
Which of the magnetic field patterns is correct when the motor
is switched on?
Rajah 5 / Diagram 5 A
Pemerhatian manakah yang betul apabila suis dihidupkan?
Which observation is correct when the switch is turned on?
Magnet J Magnet K

Bergerak menjauhi Bergerak mendekati B
A solenoid / Moves away solenoid / Moves
from the solenoid towards the solenoid
Bergerak menjauhi Bergerak menjauhi
B solenoid / Moves away solenoid / Moves away
from the solenoid from the solenoid C
Bergerak mendekati Bergerak mendekati UNIT 3
C solenoid / Moves solenoid / Moves
UNIT 3
towards the solenoid towards the solenoid
Bergerak mendekati Bergerak menjauhi
D solenoid / Moves solenoid / Moves away D
towards the solenoid from the solenoid

6 Rajah 6 menunjukkan sebiji mentol 24 V, 18 W menyala
pada kecerahan normal. / Diagram 6 shows a bulb 24 V, 18
W lights up with normal brightness. 8 Penghantaran elektrik disalurkan pada voltan yang sangat

Input tinggi supaya
Input 24 V, 18 W Electricity is transmitted at a very high voltage in order to
A meningkatan arus dalam kabel
240 V increase the current in the cables
Output B mengurangkan rintangan kabel
Output
reduce the resistance of the cables
Bilangan lilitan = 100 Bilangan lilitan = 10 C mengurangkan kehilangan kuasa
Number of turns = 100 Number of turns = 10 reduce power loss
D menambahkan rintangan kabel
Rajah 6 / Diagram 6 increase the resistance of the cables
Apakah yang akan berlaku kepada mentol apabila bilangan
lilitan pada gegelung sekunder ditambah kepada 50 lilitan? 9 Berapakah kehilangan kuasa dalam kabel penghantaran
What will happen to the bulb when the number of turns in apabila 50 kW dihantar melalui kabel yang berintangan
secondary coil increases to 50 turns? 4.0 Ω pada voltan 10 kV?
A Malap / Dimmer What is the power loss in a transmission cable when 50 kW
B Lebih terang / Brighter is transmitted through a cable with a resistance of 4.0 Ω at a
C Terbakar / Blown up voltage of 10 kV?
D Kecerahan tidak berubah A 5 W C 100 W
The brightness unchanged B 25 W D 200 W

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