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WorksheetsTransistor Physics KSSM
Total questions: 12
Worksheet time: 6mins
Diagram shows an automatic switch circuit to light up a bulb during the day time. What changes should be done to light up the bulb at night?
Rajah menunjukkan litar suis automatik untuk menyalakan lampu semasa hari siang. Apakah perubahan yang perlu dilakukan untuk menyala mentol pada waktu malam?
Interchange R1 and R3
Tukar R1 dan R3
Reverse the terminal of the battery
Terbalikkan terminal bateri
Replace the npn transistor with a pnp transistor
Gantikan transistor npn dengan transistor pnp
Interchange R1 and the LDR
Terbalikkan R1 dan LDR
Diagram shows a light controlled switch. The alarm will be activated when
Rajah menunjukkan suis automatik cahaya. Penggera akan aktif apabila
the surrounding is dark
sekeliling gelap
the surrounding is bright
sekeliling cerah
the temperature of the surrounding is high
suhu sekeliling tinggi
the temperature of the surrounding is low
suhu sekeliling rendah
The street lights use electronic control system that switches the lights on when the surrounding is dark. What is the input sensor of the control system?
Lampu jalan menggunakan sistem kawalan elektronik yang menghidupkan lampu ketika sekitarnya gelap. Apakah sensor input sistem kawalan?
Thermistor
Termistor
Light emitting diode
Diod pemancar cahaya
Microphone
Mikrofon
Light dependent resistor
Perintang peka cahaya
Diagram shows the electric circuit which switches on the bulb automatically during the day. The circuit needs to be modified so that it will function as a fire alarm. Which of the following are the symbols for the components which need to be connected at P and Q?
Rajah menunjukkan litar elektrik yang akan menghidupkan mentol secara automatik ketika waktu siang. Litar tersebut perlu diubahsuai supaya boleh berfungsi sebagai penggera kebakaran. Simbol komponen yang manakah perlu disambungkan pada P dan Q
A
B
C
D
Diagram shows a circuit consists of a transistor used to light up LED during dark. Unfortunately, the circuit does not work. Which of the following would most likely rectify the fault in the circuit?
Rajah menunjukkan sebuah litar yang mengandungi sebuah transistor digunakan untuk menyalakan LED ketika waktu malam. Tetapi, litar tersebut tidak berfungsi. Manakah antara berikut yang kemungkinan besar akan memperbaiki kerosakan dalam litar?
Reconnect the dry cells with its terminals reversed
sambung semula sel kering dengan terminal terbalik
Reconnect the LED with its terminal reversed
sambung semula LED dengan terminal terbalik
Interchange the positions of the LDR and the resistor R2
menukarkan kedudukan PPC dan perintang R2
Replaced the LDR with a thermistor
menukar PPC dengan termistor
“Resistance changes with the intensity of light.” According to the statement, which electrical component is it referring to?
“Nilai rintangannya berubah dengan keamatan cahaya.” Menurut pernyataan berikut, komponen elektrik yang manakah sedang dirujukkan?
Capacitor
Kapasitor
Thermistor
Termistor
Light dependent transistor
Transistor peka cahaya
Light dependent resistor
Perintang peka cahaya
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
