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MODUL • Fizik TINGKATAN 5

10 Rajah 10 menunjukkan satu kombinasi bagi tiga get logik. Isyarat output manakah yang betul?
Isyarat X dan isyarat Y dibekalkan kepada input. Which output signal is correct?
Diagram 10 shows a combination of three logic gates. Signal A
X and signal Y are supplied to the input.

X
B

X
Input
Input
Y Output C
Output

Y
D
Rajah 10 / Diagram 10

S oalan Struktur / Structure Questions

1 Rajah 1.1 dan Rajah 1.2 menunjukkan dua diod A dan B, dua mentol P dan Q disambung kepada satu sel kering dengan dua
susunan yang berbeza.
Diagram 1.1 and Diagram 1.2 shows two diodes A and B, two bulbs P and Q are connected to a dry cell with two different arrangements.

A P A P

B Q B Q

Suis Suis
Switch Switch UNIT 4
Rajah 1.1 / Diagram 1.1 Rajah 1.2 / Diagram 1.2
UNIT 4
(a) Berdasarkan Rajah 1.1 dan Rajah 1.2, / Based on Diagram 1.1 and Diagram 1.2,
(i) bandingkan sambungan diod-diod kepada terminal sel kering.
Compare the connection of diodes to the terminal of the dry cell.
Rajah 1.1 – anod pada diod disambungkan ke terminal positif sel kering.

Rajah 1.2 – anod pada diod disambungkan ke terminal negatif sel kering.
Diagram 1.1 – anode of the diode is connected to positive terminal of dry cell.

Diagram 1.2 – anode of diode is connected to the negative terminal of dry cell.
(ii) bandingkan nyalaan mentol-mentol itu. / compare the lighting of the bulbs.
Mentol dalam Rajah 1.1 menyala, mentol dalam Rajah 1.2 tidak menyala

Bulb in Diagram 1.1 lights up, bulb in Diagram 1.2 does not light up.
(iii) hubung kaitkan antara sambungan diod-diod kepada terminal sel kering dengan nyalaan mentol.
relate the connection of diodes to the terminal of the dry cell with the lighting of the bulbs.
Mentol tidak menyala apabila terminal positif diod disambung kepada terminal negatif bateri // pincang songsang.

Mentol menyala apabila terminal positif diod disambung kepada terminal positif bateri // pincang depan.
The bulb does not light up when the positive diode is connected to negative terminal of battery // reversed biased.

The bulb light up when the positive diode is connected to positive terminal of battery // forward biased.

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