The compass

Series of experiments related to understanding how electric current is generated

Aim:

See how a compass works and build one with very simple elements.

Material:

• A standard compass
• Plastic jar with a large mouth
• Rectangle magnet
• A little plastic tube (lollipop stick)
• Cyanoacrylate tube
• Thick thread
• Graduated disc

Process:

Compass Construction:

Paying attention to the montage of photography.

• Stick the tube on the edge of the magnet (be careful, the cyanoacrylate is very dangerous, it sticks in seconds).
• Pass the thread through the tube.
• Tie the magnet to the cap, in such a way that, when inserting the assembly into the pot, it does not touch the bottom.

Observation:

• Check how when turning, both in the standard compass and in the one that has been built, the needle (or the magnet) always points in the same direction.
• Check how the needles are parallel, pointing the two compasses in the same direction (they should not be placed too close).

Conclusion:

The compass needle is?

________________________________________________________

________________________________________________________

________________________________________________________

________________________________________________________