Perintang (resistor) ialah komponen elektronik yang digunakan untuk menghadkan aliran arus elektrik dalam litar. Nilai rintangannya diukur dalam unit ohm (Ω).
A resistor is an electronic component used to limit the flow of electric current in a circuit. Its resistance is measured in ohms (Ω).
👀 Cara Membaca | Reading Technique
✅ Pilih mod Resistance (Ω) pada multimeter.
✅ Select the Resistance (Ω) mode on the multimeter.
✅ Sentuhkan probe hitam dan probe merah pada kedua-dua kaki resistor.
✅ Touch the black and red probes to the two resistor leads.
✅ Tunggu sehingga bacaan menjadi stabil sebelum direkodkan.
✅ Wait until the reading becomes stable before recording it.
✅ Pastikan resistor tidak disambungkan kepada bekalan kuasa semasa pengukuran.
✅ Ensure the resistor is not connected to a power supply while measuring.
❌ Common Mistakes
❌ Mengukur resistor semasa litar masih hidup.
❌ Measuring a resistor while the circuit is still powered.
❌ Memilih julat Ω yang tidak sesuai.
❌ Selecting an unsuitable resistance range.
❌ Menyentuh kedua-dua kaki resistor dengan jari semasa pengukuran.
❌ Touching both resistor leads with your fingers during measurement.
❌ Menganggap nilai resistor mesti tepat sama seperti nilai yang tertera.
❌ Assuming the measured value must be exactly the same as the labelled value.
⚠️ Safety / Handling
⚠️ Matikan bekalan kuasa sebelum mengukur nilai resistor.
⚠️ Switch off the power supply before measuring resistance.
⚠️ Elakkan membengkokkan kaki resistor secara berlebihan.
⚠️ Avoid bending the resistor leads excessively.
⚠️ Simpan resistor dalam bekas yang sesuai selepas digunakan.
⚠️ Store resistors properly after use.
🎯 SPM Exam Tip
📌 Resistansi diukur dalam unit ohm (Ω).
📌 Resistance is measured in ohms (Ω).
📌 Nilai sebenar resistor mungkin sedikit berbeza daripada nilai nominal.
📌 The actual resistance may differ slightly from the nominal value.
Example from the Photo
✅ Resistor 1 kΩ
Multimeter Reading: 1007 Ω
✅ Resistor 220 Ω
Multimeter Reading: 219.6 Ω
📌 Perbezaan kecil ini adalah normal kerana toleransi pembuatan.
📌 Small differences are normal due to manufacturing tolerance.
🧠 SPM Concept Check
📌 Semakin besar nilai resistor:
📌 The higher the resistance:
✅ Semakin sukar arus mengalir.
✅ The more difficult it is for current to flow.
✅ Semakin kecil arus dalam litar.
✅ The smaller the current in the circuit.
Ohm's Law
V = IR
Where:
- V = Voltage / Voltan
- I = Current / Arus
- R = Resistance / Rintangan
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