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A galvanometer is a device that measure charges such as in a battery or power supply.

Step 1: How to Video

Materials

Plastic Bottle, copper wire, wire screws, tape, straw, magnet and stiff wire for the straw to pivot on.

Step 2: Optional

You can a wooden case for it and add wire nuts to make testing voltages easier.

Step 3: Dont for to Subscribe to My Youtube Channel

https://www.youtube.com/channel/UC3gqx2zhUyLdeGIAFyiwPYg

<p>Cool project. But your picture is upside down.</p>

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