Page 625 - MODUL SPEKTRUM FIZIK SPM

ELECTRICITY
6.7 Ohm’s Law/ Hukum Ohm
Inference / Inferens:
Hypothesis / Hipotesis:
Aim / Tujuan eksperimen:
Variables/
Pembolehubah:
Apparatus / Radas dan bahan: Constantan wire swg 24, dry cells, connecting wire, ammeter,
Arrangement of apparatus /
Susunan radas:
Procedure / Prosedur :
Tabulate data/
Penjadualan Data:
Analyze data/ Analisa data:
The brightness of the bulb is depends on the number of dry cells.
Kecerahan mentol bergantung kepada bilangan sel kering
The greater potential difference, the higher the current passing
through the bulb.
Semakin arus, semakin bertambah beza keupayaan
To investigate the relationship between potential difference and
current.
Untuk mengkaji hubungan antara arus dan beza
keupayaan
Manipulated/dimanipulasi : current/ arus, I
Responding / bergerak balas: beza
keupayaan, V
Fixed/ Malar : length of constantan wire / panjang dawai
voltmeter, rheostat
Dawai konstantan swg 24, sel kering, dawai penyambung, ammeter,
voltmeter, rheostat.
• Switch on the switch.
• Adjust the rheostat so that the ammeter reading is I = 0.2 A.
• Take the reading of the voltmeter.
• Repeat the experiment with I=0.3 A, 0.4 A, 0.5 A and 0.6 A.
• Hidupkan suis
• Laraskan rheostat sehingga bacaan ammeter I = 0.2 A.
• Ambil bacaan voltmeter.
• Ulang eksperimen dengan I = 0.3 A, 0.4 A, 0.5 A and 0.6 A.
Current, I/ A Voltage,V/V
arus, I/ A Voltan V/V
0.2
0.3
0.4
0.5
0.6
Plot graph voltage against current.
Lukis graf beza keupayaan, V lawan arus, I
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