Diagram 6.1 shows a bar magnet being moved towards a solenoid. P and Q are the poles of the bar magnet.
The direction of induced current produced, and the poles of the solenoid are as shown in the diagram.
Rajah 6.1 menunjukkan sebatang magnet bar digerakkan kepada satu solenoid. P dan Q ialah kutub magnet bar tersebut.
Arah arus aruhan dan kutub solenoid yang terhasil ditunjukkan seperti dalam rajah
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State the polarity of the poles of the bar magnet
Nyatakan kekutuban magnet bar
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P : ……………………………………………………………………………
Q : ……………………………………………………………………………
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[2 marks / markah]
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(b)
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The magnet is then moved away from the solenoid. This is as shown in Diagram 6.2.
Magnet tersebut digerakkan menjauhi solenoid. Gerakan ini seperti dalam rajah 7.2
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Diagram 6.2 / Rajah 6.2
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(i)
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Draw the direction of induced current, I in diagram 6.2
Lukis arah arus aruhan yang terhasil, I dalam rajah 6.2
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[1 mark / markah]
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(ii)
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State Lenz’s Law
Nyatakan hukum Lenz
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………………………………………………………………………..……………….
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………………………………………………………………………………………….
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[1 mark / markah]
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(iii)
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State two ways to increase the magnitude of the induced current
Nyatakan dua kaedah untuk meningkatkan magnitude arus aruhan
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1. ……………………………………………………………………………………...
2. ……………………………………………………………………………………….
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[2 marks / markah]
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(d)
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Diagram 6.3 shows an experimental set-up to study several materials
to be used as the core of an electromagnet
Rajah 6.3 menunjukkan susunan radas untuk mengkaji beberapa
jenis bahan yang boleh digunakan sebagai teras elektromagnet
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(i)
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State the type of power supply that is suitable for this experiment
Nyatakan jenis bekalan kuasa yang sesuai untuk eksperimen tersebut
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………………………………………………………………………….
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[1 mark / markah]
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(ii)
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Give one reason to justify your answer in (d)(i)
Berikan satu sebab untuk menyokong jawapan di (d)(i)
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………………………………………………………………………….
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[1 mark / markah]
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