How Does an Electric Motor Work? | Motor Effect Explained for SPM Physics

A demonstration electric motor is a teaching apparatus used to show how electrical energy is converted into mechanical energy through the motor effect.

Motor elektrik demonstrasi ialah alat pengajaran yang digunakan untuk menunjukkan bagaimana tenaga elektrik ditukarkan kepada tenaga mekanik melalui kesan motor.

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👀 Key Components | Ciri-ciri Utama

✅ Permanent Magnets

✅ Coil / Armature

✅ Axle / Pivot

✅ Terminals / Connecting Wires

✅ Magnet Kekal

✅ Gegelung / Angker

✅ Paksi / Pivot

✅ Terminal / Wayar Penyambung

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🔍 What Can We Learn From This Photo?

✅ Two permanent magnets create a magnetic field around the coil.

✅ Dua magnet kekal menghasilkan medan magnet di sekeliling gegelung.

✅ The coil is free to rotate about the axle.

✅ Gegelung bebas berputar pada paksinya.

✅ When electric current flows through the coil, magnetic forces act on opposite sides of the conductor.

✅ Apabila arus elektrik mengalir melalui gegelung, daya magnet bertindak pada kedua-dua sisi konduktor.

✅ These forces produce a turning effect that causes rotation.

✅ Daya ini menghasilkan kesan putaran yang menyebabkan gegelung berputar.

✅ This is the same principle used in household fans, mixers and electric vehicles.

✅ Prinsip yang sama digunakan dalam kipas, pengisar dan kenderaan elektrik.

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❌ Common Mistakes

❌ Assuming the magnets alone make the motor spin.

❌ Menganggap magnet sahaja menyebabkan motor berputar.

❌ Forgetting that current must flow through the coil.

❌ Terlupa bahawa arus mesti mengalir melalui gegelung.

❌ Confusing a motor with a generator.

❌ Mengelirukan motor dengan generator.

❌ Thinking the motor creates energy.

❌ Menganggap motor menghasilkan tenaga.

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⚠️ Safety / Handling

⚠️ Use only a low-voltage power supply.

⚠️ Gunakan bekalan kuasa voltan rendah sahaja.

⚠️ Keep fingers away from moving parts during operation.

⚠️ Jauhkan jari daripada bahagian yang bergerak semasa operasi.

⚠️ Switch off the power supply before adjusting the setup.

⚠️ Matikan bekalan kuasa sebelum membuat pelarasan.

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🎯 SPM Physics Connection

📌 A current-carrying conductor experiences a force in a magnetic field.

📌 Konduktor yang membawa arus mengalami daya dalam medan magnet.

📌 This phenomenon is known as the Motor Effect.

📌 Fenomena ini dikenali sebagai Kesan Motor.

📌 The direction of motion can be predicted using Fleming's Left-Hand Rule.

📌 Arah pergerakan boleh ditentukan menggunakan Petua Tangan Kiri Fleming.

📌 Electric motors convert electrical energy into mechanical energy.

📌 Motor elektrik menukarkan tenaga elektrik kepada tenaga mekanik.

 AHA! Every spinning fan, blender and electric vehicle begins with the same three ingredients: a current, a magnetic field and a force. Not by motion, but by MAGNETISM IN ACTION!

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