Rheostat – 4.5 Ohms, 9.0 Amps (Single‑Tube, Heavy‑Duty Construction)

This durable 4.5‑Ohm Rheostat is specifically engineered for high‑current applications in school physics laboratories. With a maximum capacity of 9.0 Amps, it provides smooth and reliable resistance adjustment, making it perfect for advanced electrical investigations and controlled circuit demonstrations.

The rheostat is built to last, featuring robust metal die‑cast feet that deliver excellent stability during repeated classroom use. Its porcelain tube is professionally wound with heavily oxidised resistance wire, ensuring strong heat resistance and dependable performance even under demanding conditions.

Key Features

• 4.5‑Ohm resistance with a high current rating of 9.0 Amps
• Single‑tube rheostat design for accurate and stable resistance adjustment
• Constructed with durable metal die‑cast feet for secure bench placement
• Wound with heavily oxidised resistance wire for improved thermal durability
• Porcelain tube offers excellent insulation and safety during experiments
• Ideal for school science labs, engineering training, and high‑current circuit studies

Ideal for School Science Lessons

Well‑suited for GCSE and A‑Level Physics, this rheostat supports practical learning in high‑current electrical systems. It is perfect for:

• Demonstrating the impact of variable resistance on current in high‑load circuits
• Practical exploration of Ohm’s Law and power dissipation at higher currents
• Studying thermal effects in resistive components
• Teaching electrical control in series and parallel circuit arrangements
• Providing hands‑on experience with real, high‑current electrical components

Strong, reliable, and designed for repeated classroom use, this 4.5‑Ohm Rheostat is an essential piece of equipment for teaching advanced electrical principles in school science laboratories.