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PHYSICS - Trial Paper Collection

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papercollection9(b) Complete the following sentences by underlining the correct word.Lengkapkan ayat-ayat berikut dengan menggariskan perkataan yang betul.When T is heated up, its resistance ( decreases / increases ).The base current, I B ( decreases / increases ) to switch on the transistor and lightup the bulb.Apabila T dipanaskan, rintangannya ( berkurang / bertambah ).Arus tapak, I B ( berkurang / bertambah ) untuk menghidupkan transistor danmenyalakan mentol.[2 marks](c)Diagram 4.2 shows the trace produced by an alternating current signal on thescreen of a cathode ray oscilloscope. The time base of the oscilloscope is set at0.02 s per division.Rajah 4.2 menunjukkan satu surih yang dihasilkan oleh satu isyarat arusulangalik pada skrin sebuah osiloskop sinar katod. Dasar masa osiloskop ituditetapkan pada 0.02 s per bahagian.Diagram 4.2 / Rajah 4.2 Diagram 4.3 / Rajah 4.3(i)What is the period of the alternating current signal?Berapakah tempoh bagi isyarat arus ulangalik itu?…......................................................................................................................[1 mark](ii) Calculate the frequency of the alternating current signal.Hitung frekuensi bagi isyarat arus ulangalik itu.[2 marks](iii) On Diagram 4.3, draw the trace produced when the frequency of thealternating current signal is doubled.Pada Rajah 4.3, lukis surih yang dihasilkan apabila frekuensi isyarat arusulangalik itu menjadi dua kali ganda.[1 mark]

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