Motor / Generator Unit – 6–9V Demonstration Apparatus

This versatile Motor / Generator Unit is designed to clearly demonstrate key principles of energy transfer, mechanical work, and electrical generation in school science lessons. Mounted on a robust metal base, the unit features carefully selected gearing and pulley sizes that enable both qualitative and quantitative experiments.

The system can be used to lift a mass or stretch a bungee cord, showing how mechanical energy is stored. When the mass falls or the bungee is released, students can observe the conversion back into electrical energy as the generator produces a measurable current. The unit can also be operated manually by turning the pulley wheel, providing a simple way to demonstrate hand‑generated electricity.

Key Features

• Dual‑purpose motor/generator for energy transfer demonstrations
• Operates at 6–9V
• Robust metal base for stability and durability
• Optimised gearing and pulley ratios for effective demonstrations
• Can lift masses or stretch elastic cords for stored‑energy experiments
• Generates electrical current when the system releases stored energy
• Can be hand‑operated to generate electricity directly
• Suitable for both qualitative and quantitative physics investigations

Ideal for School Science Lessons

Perfect for KS3, GCSE, and A‑Level physics, this Motor / Generator Unit is an excellent tool for exploring energy transfer and the relationship between mechanical and electrical systems. It supports a wide range of curriculum‑aligned practical activities, including:

• Investigating energy conversions (mechanical → electrical)
• Exploring work done, forces, and lifting weights
• Demonstrating elastic potential energy using a bungee cord
• Measuring voltage and current output under different loads
• Studying efficiency and energy losses in real systems
• Hand‑crank electricity generation experiments

Reliable, durable, and highly engaging, this Motor / Generator Unit brings abstract physics concepts to life through clear, hands‑on experimentation, making it an essential addition to any school laboratory.