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MODUL • Fizik TINGKATAN 5

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(a) (b) (c) (d) (e) (a) (b) (c) (d) (e)
d.g.e. = 0 d.g.e. = d.g.e. = 0 d.g.e. = d.g.e. = 0 d.g.e. = 0 d.g.e. = d.g.e. = 0 d.g.e. = d.g.e. = 0
e.m.f. = 0 maksimum e.m.f. = 0 maksimum e.m.f. = 0 e.m.f. = 0 maksimum e.m.f. = 0 maksimum e.m.f. = 0
e.m.f. = e.m.f. = e.m.f. = e.m.f. =
maximum maximum maximum maximum
d.g.e teraruh d.g.e teraruh
induced e.m.f. induced e.m.f.
Bilangan
putaran Bilangan
Number of putaran
0 rotations 0 Number of
rotations
(a) Apabila angker/gegelung satah dalam keadaan menegak, (a) Bermula dengan gegelung satah/angker dalam keadaan
sisi BC dan AD bergerak selari dengan garis medan magnet. menegak, sisi BC dan AD bergerak dalam keadaan selari
Maka, tiada pemotongan garis medan magnet. Maka, tiada dengan garis medan magnet. Maka, tiada pemotongan garis
arus aruhan dihasilkan. medan magnet. Maka, tiada arus aruhan dihasilkan.
When the plane of the coil is in a vertical position, the sides Starting with the plane of the coil in the vertical position, the
sides BC and AD move parallel with the magnetic field lines.
BC and AD move parallel with the magnetic field lines. There is no cutting of magnetic lines of force. Therefore, no
There is no cutting of magnetic lines of force. Therefore, no induced current is produced. UNIT 3
induced current is produced.
UNIT 3
(b) Dalam keadaan mendatar, BC bergerak ke atas dan
(b) Dalam keadaan mendatar, BC bergerak ke atas dan AD AD bergerak ke bawah. Sisi BC dan AD memotong
bergerak ke bawah. Sisi BC dan AD memotong garis garis medan magnet
pada sudut tegak. Oleh itu,
medan magnet pada sudut tepat. Oleh itu, arus teraruh yang arus teraruh dan d.g.e. teraruh yang maksimum dihasilkan.
maksimum dihasilkan serta d.g.e. maksimum In the horizontal position, BC moves upwards and AD moves
diaruhkan. / In the horizontal position, BC moves upwards and downwards. The sides BC and AD cut the magnetic field lines
AD moves downwards. The sides BC and AD cut the magnetic at right angles. Hence, the induced current produced is
field lines at right angles. Hence, the induced current produced maximum and the induced e.m.f. is maximum.
is maximum and the induced e.m.f. is maximum.
(c) Selepas keadaan ini, arus teraruh (d.g.e. teraruh) berkurangan
(c) Selepas keadaan ini, arus teraruh (d.g.e. teraruh) berkurangan sehingga ke sifar, apabila angker/gegelung satah dalam
sehingga ke sifar apabila angker/gegelung satah dalam keadaan menegak semula kerana tiada
keadaan menegak semula kerana tiada pemotongan garis pemotongan garis medan magnet.
medan magnet. After this position, the current starts to decrease until it is zero
After this position, the current starts to decrease until it is zero
when the plane of the coil is in a vertical position because the when the plane of the coil is in a vertical position
magnetic field lines are not cut. because the magnetic field lines are not cut.
(d) Arah arus di dalam litar luar tidak berubah. (d) Proses ini diulang.
The direction of the current in the external circuit does not The process is repeated.
change.
(e) Arah arus di dalam litar luar berubah-ubah setiap kali
(e) Proses ini diulang. gegelung/angker melepasi keadaan menegak.
The process is repeated. The direction of the current in the external circuit changes each
time the coil passes the vertical position.
(f) Arus dalam litar luar ialah arus terus (iaitu,
arus yang mengalir dalam satu arah). (f) Arus dalam litar luar ialah arus ulang-alik .
The current in the external circuit is a direct The current in the external circuit is an alternating
current (that is, the current flows in one direction). current.
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