Description
Build an electromagnet to lift metal objects, revealing the power of electricity and magnetism, delivering an exciting aha-effect as kids control their crane.
Details
1. Wrap insulated copper wire tightly around a large iron nail 30–40 times.
2. Strip the wire ends and connect them to a D-cell battery.
3. Tape the battery securely to a ruler to create a ‘crane.’
4. Turn on the circuit by touching wires to the battery and pick up paper clips.
5. Count how many clips the magnet lifts.
6. Discuss how electricity creates a magnetic field.
Materials
Insulated copper wire, large iron nail, D-cell battery, tape, ruler, paper clips