Section ABahagian A[60 marks][60 markah]Answer all questions in this section.Jawab semua soalan dalam bahagian ini.1.Diagrams A and B show a simple electrical circuit set up to measure the current and potential diff erence across a filament bulb.Rajah A dan B menunjukkan suatu litar elektrik ringkas untuk mengukur arus dan beza keupayaan merentasisuatu mentol filamen.DIA!A" A # !A$A% A &a'&i' (ame instruments ) and *.Berikan nama alat-alat ) dan *.)+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, *+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,[- mar.s#- markah] &ii'/hat is the use of ! in the circuit0Apakah kegunaan ! dalam litar0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,[1 mar.#1 markah] &b'Diagram B shows two t1pes of ammeter2 A and B2 that can be used in the circuit shown in Diagram A.Rajah B menunjukkan dua jenis ammeter, A dan B2 yang boleh digunakan dalam litar pada Rajah A.DIA!A" B # RAJAH B &i' If the current flowing through the filament bulb is 0.3 A2 which meter would be more suitable to be used0Jika arus yang melalui mentol filamen adalah 0.3 A2 meter yang manakah lebih sesuai digunakan0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,[1 mar.#1 markah] &ii'i4e one reason for 1our answer in &b'i.Berikan satu sebab bagi jawapan anda dalam &b'i.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,[1 mar.#1 markah] -. 5he apparatus shown in Diagram below is set up with metal plates 6 and 7 about 3 cm apart. 5he ball is coated with metallic paint.Radas yang ditunjukkan dalam Rajah di bawah didirikan dengan plat 6 dan 7 dipisahkan kira-kira 3 cm. Bola itu disalut dengan at logam.Diagram # Rajah &a' 5he ball is displaced to touch plate 6. Describe the subsequent motion of the ball if it is released.89plain 1our answer.Bola itu disesarkan untuk menyentuh plat 6. Huraikan pergerakan bola itu yang seterusnya jika ia dilepaskan. !erangkan jawapan anda.[- mar.s#markah] &b' Draw a force diagram to show all the forces acting on the ball after it has :ust touched plate 6."ukiskan satu rajah daya untuk menunjukkan semua daya yang bertindak ke atas bola itu selepas ia baru sahaja menyentuh plat 6.[- mar.s#markah] &c' /hat is the purpose of painting the ball0Apakah tujuan menatkan bola itu0[1 mar.#markah] &d' /hat happens if the supporting thread conducts electricit10&Describe the motion of the ball when it is displaced to touch plate 6 and then released.'Apakah yang berlaku jika tali sokongan itu mengkonduksi elektrik0 &Huraikan pergerakan bola itu apabila ia disesarkan untuk menyentuh plat 6 dan kemudian dilepaskan.'[- mar.s#markah];.Diagram below shows the t1pical electrical wiring s1stem in a house. 5he wiring s1stem consists of two branch circuits2 i.e. the lightning circuit and the power circuit.Rajah di bawah menunjukkan sistem pendawaian elektrik yang biasanya didapati dalam rumah.#istem pendawaian itu mengandungi dua awangan litar elektrik, iaitu litar lampu dan litar alat elektrik.Diagram # Rajah &a &i' . Diagram below shows the wiring of a house.Rajah di bawah menunjukkan satu sistem pendawaian di sebuah rumah.Diagram # Rajah &a' /hat is a fuse0Apakah itu fius'[1 mar.#markah] &b' /hat are the characteristics of a material which is suitable to be used for ma.ing fuse wire0Apakah iri-iri bahan yang sesuai digunakan untuk membuat dawai fius'[- mar.s#markah] &c' A heater has a power of 0.DC ./ and is connected to a potential difference of ->0 ?. Determine thecapacit1 of the fuse that should be used to protect this de4ice.#atu pemanas rendam mempunyai kuasa 0.DC ./ dan disambungkan kepada beza keupayaan ->0 ?.!entukan keupayaan fius yang patut digunakan untuk melindungi alat ini.[- mar.s#markah] &d' 89plain wh1 the lamps are arranged as shown in Diagram abo4e.!erangkan mengapa lampu disusun seperti yang ditunjukkan pada Rajah di atas.[1 mar.#markah] &e' /h1 must the wire circuit in the house be earthed0(engapakah litar dawai di rumah perlu dibumikan'[1 mar.#markah] &f' 89plain wh1 a person is forbidden to use an electrical appliance which is in wet condition.!erangkan mengapa seseorang adalah dilarang untuk menggunakan alat elektrik dalam keadaan basah.[1 mar.#markah]C.Diagram below shows a -00 ? domestic lighting circuit.Rajah di bawah menunjukkan satu litar penahayaan domestik -00 ?.Diagram #Rajah &a'89plain wh1 the lamps are all connected in parallel instead of in series.!erangkan mengapa semua mentol itu disambungkan seara selari bukannya sesiri.%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%[1 mar.#1 markah] &b'5he light bulbs in the circuit are all mar.ed =100 /2 -00 ?@. If all the light bulbs are switched on2 find#emua mentol ahaya litar itu ditandakan dengan =100 /2 -00 ?@. Jika semua mentol ahaya dipasangkan, ari&i' the total resistance of the lighting circuit.jumlah rintangan bagi litar penahayaan itu.%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%[- mar.s#- markah] &ii'the total current drawn from the main suppl1.jumlah arus yang diperoleh daripada bekalan utama.%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%[- mar.s#- markah] &c'&i' 89plain the use of the fuse in the circuit.!erangkan kegunaan fius dalam litar itu.%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%[; mar.s#; markah] &ii' Is the CAEfuse suitable in this circuit0Adakah fiusECA sesuai dalam litar ini0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,[1 mar.#1 markah] &iii'89plain wh1 the switches should be connected to the li4e wire instead of the neutral wire.!erangkan mengapa suis-suis itu harus disambungkan kepada dawai hidup bukannya dawai neutral.%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%[- mar.s#- markah]6.Diagram below shows part of the electrical wiring s1stem in a .itchen. 5wo lamps2 A and B2 both labelled =->0 ?2 60 /@2 are connected across the li4e and neutral wires through a fuse2 62 in the li4e wire.Rajah di bawah menunjukkan sebahagian sistem pendawaian elektrik dalam sebuah dapur. )ua lampu A dan B2kedua-dua dilabelkan =->0 ?2 60 /@2 disambungkan merentasi dawai hidup dan dawai neutral melalui fius 6 pada dawai hidup.An electrical .ettle2 rated =->0 ?2 FC0 /@ is connected to the same li4e and neutral terminals through another fuse2 7. A third fuse2 G2 protects the complete circuit.#uatu erek elektrik, berkadar =->0 ?2 FC0 /@ disambungkan kepada terminal hidup dan terminal neutral yang sama melalui fius 7. #uatu fius ketiga, G melindungi seluruh litar.An electrical .ettle has a metal bod1 which is connected to the earth wire.*erek elektrik mempunyai suatu badan logam yang disambungkan kepada dawai bumi.DIA!A" # RAJAH &a'Aalculate the current passing through each of the fuses2 62 7 and G2 when the electric .ettle and both lamps are switched on.Hitungkan arus yang mengalir melalui setiap fius 62 7 dan G apabila erek elektrik, dan kedua lampu dihidupkan.[; mar.s#; markah] &b'A fault has de4eloped in the .ettle2 causing a current of 10 A to flow through fuse 7. Hamps A and B continued to glow brightl1.#uatu kejejasan berlaku pada litar erek elektrik, menyebabkan arus 10 A mengalir melalui fius 7. "ampu Adan B terus menyala dengan erah.5he ma9imum current allowed safel1 through each fuse is gi4en in the table below.Arus maksimum yang dibenarkan seara selamat mengalir melalui setiap fius adalah diberi dalam jadual berikutBDiscuss and e9plain what happens to each of the fuses2 62 7 and G2 when the fault de4elops.Binangkan dan terangkan apa yang berlaku kepada setiap fius 62 7 dan G apabila kejejasan litar berlaku0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,[; mar.s#; markah]&DIA!A" # RAJAH &c'If the li4e wire touches the metal bod1 of the electric .ettle as shown in Diagram abo4e.Jika dawai hidup tersentuh pada badan logam erek elektrik seperti ditunjukkan pada Rajahdi atas.&i' state what will happen to the earth wire.nyatakan apa yang akan berlaku kepada dawai bumi.%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%[1 mar.#1 markah] &ii'state which fuse will melt first.nyatakan fius yang manakah akan melebur dahulu.%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%[1 mar.#1 markah] F.Diagram below shows how the lights in three rooms of a house are connected to the three wireslabelled )2 * and 8.Rajah di bawah menunjukkan bagaimana lampu-lampu di tiga bilik sebuah rumah disambungkan kepada tiga dawai )2 *2 dan 8.Diagram #Rajah &a'5he three wires are 8arth2 Hi4e and (eutral. If 8 is the 8arth wire2 write down the names of wire ) and wire *.Jika + ialah dawai Bumi, tuliskan nama dawai , dan dawai -. !iga dawai itu adalah Bumi, Hidup dan $eutral.)B ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, *B ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,[1 mark#1 markah]&b'0 ?2 - 000 / -00!efrigerator,eti #ejuk->0 ?2 1 000 / 100Jan.ipas->0 ?2 C00 / ;005able A # Jadual A &a'i. /hat is meant b1 the rating =->0 ?2 - 000 /@ for a tele4ision0Apakah yang dimaksudkan dengan kadar =->0?2 -000 /@ pada tele2isyen0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,[1 mar.#1 markah] ii. /hen the tele4ision functions normall12 what is the current flowing through it0Apabila sebuah tele2isyon berfungsi seara normal, berapakah nilai arus yang mengalir melaluinya0[- mar.s#- markah] iii./hat is the most suitable 4alue of fuse used for the tele4ision0 89plain 1our answer.Berapakah nilai fius yang sesuai digunakan oleh tele2isyon' !erangkan jawapan anda.%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%[- mar.s#- markah] &b'5able B shows the tariff for the use of electrical energ1 in public housing in one month.Jadual B menunjukkan kadar tarif pengunaan tenaga elektrik untuk rumah kediaman awam dalam masa satu bulan.Electrical energyTenaga elektrikRate per unitKadar per unit Jirst 100 unit 100 unit pertama!" 0.-0 0 I- 2 Aurrent flowing through fuse 6#Arus melalui fius 6 + -I1 + -&0.-C' + 0.C AAurrent flowing through fuse 7#Arus melalui fius 7 + I- + ;.1-C AAurrent flowing through fuse G#Arus melalui fius G + -I1 P I- + ;.6-C A&b'5he current flowing through fuse 7 is 10 A2 which is higher than the ma9imum allowed current of C A. Arus mengalir melalui fius 7 ialah 10 A2 lebih tinggi daripada arus maksimum C Ayang dibenarkan. Juse 7 will blow &ius 7 akan putus.5he current flowing through 6 + 0.-C P 0.-C + 0.C A2 which is less than the ma9imum allowed currentof ; A. Juse 6 can be used.Arus yang melalui fius 6 + 0.-C P 0.-C + 0.C A2 ini kurang daripada arus maksimum; A yang dibenarkan. (aka fius 6 boleh digunakan.5he current flowing through fuse G + 0.C P 10 + 10.C A2 which is less than the ma9imum allowedcurrent of 1C A. Juse G can be used.Arus melalui fius G + 0.C P 10 + 10.C A2 ini kurang daripada arus maksimum 1C Ayang dibenarkan.(aka fius G boleh digunakan.&c'i. A large current will flow from the li4e wire through the metal bod1 and then through the earth wire to the ground. #uatu arus amat besar akan mengalir dari dawai hidup melalui badan logam dan kemudian melalui dawai bumi ke bumi. ii. Juse 72 which has a lower ma9imum allowed current than fuse G will melt first. &ius 72 yang mempunyai arus maksimum yang lebih rendah daripada fius G akan melebur dahulu.F. &a' ) + Hi4e wire2 wayar hidup, * + neutral wire. wayar neutral.&b' In parallel. #eara selari.&c'i.) + ?- ! ! + ?- +? -! ! + CF6 Mii.I + ? + ->0 CF6 ! + 0.>- A&d' 8nerg1 used in 1 da1 + )ower O time !enaga yang digunakan dalam / hari

8nerg1 used in 1 month !enaga yang digunakan dalam 1 bulan+ 1 ./h O ;0+ ;0 ./hAost#Harga + ;0 O !" 0.-0 + !" 6.00 3.&a' i. 5ele4ision needs ->0 ? source to function normall1 and the power of the tele4ision is - 000 /.!ele2isyen memerlukan sumber ->0 ? untuk berfungsi dengan normal dan kuasa tele2isyen ialah -000 /.

iii. A current of D A e9ceeds the normal situation. 5he fuse will melt and brea. the electric circuit#electricit1 immediatel1. Arus sebanyak D A melebihi situasi yang normal. &ius akan menair dan memutuskan litar elektrik8 arus elektrik dengan segera.&b' 5he use of electrical energ1 ,enggunaan tenaga elektrik + - ./ O -00 h P 1 ./ O 100 h P 0.C ./ O ;00 h + >00 ./h P 100 ./h P 1C0 ./h + 6C0 ./h 5he cost of electricit1 .os penggunaan elektrik + 100 O !" 0.-0 P -00 O !" 0.-; P ;C0 O !" 0.-C + !" 1C;.C0D.&a'i. 8lectric energ1 supplied b1 a source when 1 coulomb of charge flows through the source. [1 m]ii. Q Jor both circuits2 the reading of the 4oltmeter decreases after the switch is turned on. [1 m]Q Jor both circuits2 the ammeter reading before the switch is turned on is 0 A and after the switch is turned on2 a reading is obtained. [1 m]Q 5he 4oltmeter reading decreases because both batteries ha4e internal resistance. [1 m]Q 5here is a 4oltmeter reading because it is the electromoti4e force of the batter1. &both batteries used are the same' [1 m]Q Batter1 B is used longer than batter1 A because there is a bigger loss of potential difference in circuit B. &which is2 the internal resistance of batter1 B is larger' [1 m]&b'Q Aonnecting batteries in series produces a bigger electromoti4e force. [1 m] Q /hen batteries are connected in parallel2 the electromoti4e force produced is the same as theelectromoti4e force produced b1 one dr1 cell onl1. [1 m] Q But when the batteries are connected in parallel the batteries will last longer. [1 m] Q 5his is because the amount of energ1 that is .ept in the batteries is more. [1 m]&c'i. Q An electromagnet lifter consists of a soft iron core that is coiled with thic. copper strips. [1 m] Q 0 + I&C0'2 I + >.3 A ii. 5he fuse used must ha4e a current rating which is higher than the normal current in the circuit. C A is too near to >.3 A and 1; A is too high. 5he most suitable is 10 A. &ius digunakan harus mempunyai suatu kadar arus lebih tinggi daripada arus normal dalam litar. ,aling sesuai ialah 10 A.1-.&a' i. !esistance is the ratio of potential difference to current.Rintangan adalah nisbah beza keupayaan kepada arus.ii. Q A high melting point!akat lebur yang tinggiQ