Resistance Coil – 50 Ohm (KS4+)

The 50 Ohm Resistance Coil is a durable and easy‑to‑use electrical component designed for KS4 and post‑16 physics lessons. It provides a fixed, known resistance that can be quickly added to electrical circuits, making it ideal for teaching basic and intermediate electrical principles in a school laboratory environment.

Unlike loose resistors, this resistance unit is housed in a robust block fitted with standard 4mm socket terminals, allowing fast, secure connections using conventional laboratory leads. This design makes circuit construction simpler, safer, and more reliable for students, particularly during repeated classroom experiments.

With a nominal power rating of 1 watt, the 50 ohm resistance coil is suitable for low‑voltage educational circuits. It delivers consistent and predictable performance, supporting accurate measurements and clear demonstration of electrical relationships.

Key Features

• Fixed resistance value: 50 ohms
• Suitable for KS4 and A‑Level physics
• Nominal power rating: 1 watt
• Durable block design with 4mm socket connections
• Quick and secure use with standard laboratory leads
• More robust and user‑friendly than loose resistors
• Designed for regular classroom use

Ideal for School Physics Lessons

Ideal for GCSE and A‑Level physics courses, this resistance coil supports a wide range of electrical investigations. Its lower resistance value makes it particularly useful for experiments involving higher currents within safe classroom limits.

• Investigating Ohm’s Law (V = IR)
• Measuring current and voltage in simple circuits
• Exploring the effects of changing resistance
• Calculating electrical power and energy transfer
• Building reliable student‑constructed circuits

Robust, accurate, and designed for education, the 50 Ohm Resistance Coil is an essential component for teaching electricity safely and effectively in the school science laboratory.