Rheostat – 125 Ohms, 1.8 Amps

This high‑quality 125‑ohm, 1.8‑amp rheostat is designed for reliability and durability in educational and laboratory environments. Built as a single‑tube rheostat, it now features robust die‑cast metal feet for improved stability during classroom demonstrations and experiments. The resistance element is crafted from heavily oxidised resistance wire, precision‑wound onto a porcelain tube to ensure excellent heat tolerance, consistent performance, and long service life.

Key Features

• 125‑ohm resistance for a wide range of circuit applications
• 1.8‑amp current capacity suitable for student experiments
• Strong die‑cast metal base for extra durability and stability
• Porcelain core offering excellent insulation and heat resistance
• Oxidised resistance wire for smooth, reliable adjustment of electrical current

Ideal for School Science Lessons

This rheostat is an excellent teaching tool for demonstrating variable resistance, controlling current, and exploring electrical circuits in physics lessons. Students can clearly observe how adjusting a rheostat affects voltage, current flow, and the brightness of bulbs or the speed of motors. Its durable construction makes it perfectly suited for frequent hands‑on use in the classroom.