Conductors and non-conductors with Cobra SMARTsense

Principle

Building on the everyday fact that power cables are insulated, students experiment with different metallic and non-metallic materials in a simple circuit to discover which ones conduct electricity.

Tasks

• Test a variety of solid materials for electrical conductivity.
• Use a light bulb to check whether current flows.

Learning objective

Students will learn to understand the light bulb as both a current limiter and an indicator. They will also be able to judge whether a solid material—especially a metal—conducts electricity.

Benefits

• No extra wiring needed between components, making the setup quicker and easier to follow
• Safe and reliable connections through puzzle-like interlocking parts
• Hard-gold plated, corrosion-resistant contacts
• Double learning benefit: the electrical circuit diagram is shown on the top side, while the real components are visible on the underside