Question

introduction on a wind mill project ( which is made by battery and motor)
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Answer 1

Explanation:

Working model of windmill is a common science project given in class 6 and above. The idea is to explain conversion of energy from one form to another. ... Others commit a very innocent mistake of attaching motor fixed with fan to the battery cell and end up making a fan run on battery instead of a windmill.

Answer 2

Answer:

Place the needles upright next to the terminals of each battery so that the side of each needle touches one terminal of the battery.

Use electrical tape to secure the needles to the ends of the battery. ...

Tape the small magnet to the side of the battery so that it is centered underneath the coil.