INSTRUCTION: This section consists of FOUR (4) structured questions. Answer ALL questions.

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1 SECTION B : 60 MARKS BAHAGIAN B : 60 MARKAH INSTRUCTION: This section consists of FOUR (4) structured questions. Answer ALL questions. ARAHAN: Bahagian ini mengandungi EMPAT(4) soalan berstruktur. Jawab semua soalan. QUESTION 1 SOALAN 1 CLO1 a) State THREE (3) main effects of electric current Nyatakan TIGA (3) kesan utama arus electric CLO1 b) Calculate the individual resistance for the star network from delta network as shown in Figure B1(b). Kirakan kerintangan individu untuk rangkaian bintang daripada rangkaian delta yang ditunjukkan dalam Rajah B1(b). R 1 10kΩ R 2 20kΩ R 3 35kΩ Figure B1(b) / Rajah B1(b) [5 marks] [5 markah] 6

2 CLO2 c) Calculate the total resistance, I S, I 1, I 2, V 1 and V 2 as shown in Figure B1(c). Kira jumlah rintangan, I s, I 1, I 2, V 1 and V 2 seperti yang dtunjukkan dalam Rajah B1(c) Figure B1 (c) / Rajah B1 (c) [7 marks] [7 markah] QUESTION 2 SOALAN 2 a) Define Thevenin s Theorem and draw its Equivalent circuit Takrifkan Teorem Thevenin dan lakarkan litar setara Thevenin 7

3 b) Express the equation for loop 1 and loop 2 by using Kirchoff s Law for the circuit in Figure B2(b) Nyatakan persamaan gelung 1 dan gelung 2 dengan menggunakan Hukum Kirchoff berdasarkan Rajah B2(b) Figure B2(b) / Rajah B2(b) [4 marks] [4 markah] c) Calculate the branch current through R 1 using the mesh method as shown in Figure B2(c). Kirakan arus cabang, I R1 menggunakan kaedah gelung seperti yang ditunjukkan dalam Rajah B2(c). Figure B2(c) / Rajah B2(c) [8 marks] [8 markah] 8

4 QUESTION 3 SOALAN 3 a) List TWO (2) types of capacitor and sketch ONE (1) symbol of capacitor. Senaraikan DUA (2) jenis pemuat dan SATU (1) simbol pemuat. b) Determine the total capacitances as shown in Figure B3(b). Tentukan jumlah kemuatan seperti yang ditunjukkan dalam Rajah B3(b). Figure B3(b) / Rajah B3(b) [5 marks] [5 markah] c) A capacitor consists of two circular metal plates, each with a radius of 5 cm. The plates are parallel to each other and separated by a distance of 1 mm. The capacitor also connected to 9 volt battery across the plates in vacuum. Calculate the capacitance of the capacitor and the charge on each plate Satu kapasitor mempunyai dua plat besi dengan setiap satunya berjejari 5 cm. Kedudukan plat adalah selari dan jarak antara plat ialah 1 mm. Kedua dua plat kapasitor ini disambung kepada 9V bateri dan dalam keadaan vakum. Kirakan kemuatan kapasitor dan cas setiap plat [7 marks] [7 markah] 9

5 QUESTION 4 SOALAN 4 a) Define induced voltage and state its formula Nyatakan maksud voltan teraruh dan formulanya b) Explain first Faraday s Law by using suitable diagram Terangkan dengan bantuan gambarajah Hukum Faraday yang pertama [4 marks] [4 markah] c) Calculate the equivalent inductance, L T between terminal A and B as shown in Figure B4(c) Kirakan aruhan setara, L T antara terminal A dan B seperti yang ditunjukkan dalam Rajah B4(c) Figure B4(c) / Rajah B4(c) [8 marks] [8 markah] 10

6 SECTION C : 30 MARKS BAHAGIAN C : 30 MARKAH INSTRUCTION: This section consists of TWO (2) essay questions. Answer ALL questions. ARAHAN: Bahagian ini mengandungi DUA (2) soalan esei. Jawab SEMUA soalan. QUESTION 1 SOALAN 1 Calculate Vth, Rth and current through load resistor, R L as shown in Figure Kirakan Vth, Rth dan arus yang melalui perintang beban, R L seperti yang ditunjukkan dalam Rajah. Figure / Rajah [15 marks] [15 markah] 11

7 QUESTION 2 SOALAN 2 Given the value of the current = 0.3A, coil = 500 turns, flux, Ø = 536µWb, crossectional area (A) = 1800mm 2 and length, l = 150mm. Calculate magnetomotive force (m.m.f), reluctance of the circuit, magnetic flux density (B) and permeability,µ by referring to Figure. Diberi arus = 0.3A, gegelung = 500 lilitan, fluks, Ø = 536µWb dan panjang l = 150mm. Kirakan daya gerak magnet, keengganan litar, ketumpatan fluks magnetik (B) dan ketelapan, µ dengan merujuk Rajah. Figure / Rajah [15 marks] [15 markah] SOALAN TAMAT 12