How to Test a Dry Cell Battery
A battery can be tested by means of some wires and bulbs. But it can be tested by means of a blade also. Is it surprising? You yourself can do it. Yes, it can be included in Do it Yourself projects.
Steps
- Make a coil by winding over a tumbler or any cylindrical objects.
- Tie the coil at three places and make it to stand perpendicularly to the block of wood.
- Tie the blade by a thread and hang it at the top part of the coil such that it is parallel to the coil.
- Connect the ends of the coil to a battery; it will deflect, showing that it has potential in it.
Tips
- It's a variation on the compass deflection experiment. A razor blade is light enough in weight. A coil diameter of a few centimeters should work on the smallest battery with fairly few turns.
As a practical means of establishing the condition of a battery, it leaves something to be desired. An appropriately rated bulb lighting brightly from a battery shows good condition, but in practice this is quite a complex problem.
Warnings
- Don't try to send current from main lines.
Things You'll Need
- Some enamelled copper wire or wires obtained from the used and thrown choke of tubelights will do.
- A thin razor blade and some thread to tie the things.
- A block of wood to stand the coil.
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