Magnet Fire - Science fair project

Materials Required

• Cheap ceramic magnet found in local harware store
• An electric bulb with filament close to the glass walls of the bulb.

Procedure

Turn on the bulb and hold the magnet close to the filament of the bulb and observe. You can notice the filament wiggling inside the electric bulb.

Inference

The domestic power supply is alternating current, meaning the floww of current alternates direction 120 times per second. When a magent is placed near the filament inside the electric bulb, it attracts and repels the filament that carry electric charges 120 times a second causing the filament to wiggle 120 times per second. This can be used as a demonstration to show the difference between AC (Alternating Current) and DC (Direct Current)