Objective :

  To use conductivity of salty Aata dove

Introduction :

Electric circuits are made with elements like resistances, bulbs, batteries etc. One needs connecting wires to connect the circuits. What about using Aata (ground wheat) dove in the place of wires? You can easily change the shape of the dove and hence study the electrical properties of such connecting lines effectively. To make this dove conducting, we suggest putting salt solution while preparing the dove .

Keywords :

Conductivity, Ohm's law

Equipment :

Aata dove prepared in salt solution, an LED, battery or DC power supply, two connecting wires.A glass tumbler, a long piece of paper, a table.

Procedure:

Take two doves and connect them to the two terminals of the battery we call it Power doves. the dove. Take an LED. Put the longer leg into the dove connected to positive terminal of the battery and the shorter leg into the other dove.

Now take a small part of the dove, roll it like short cylinder and connect the two ends to the two power doves. What happened to the LED glow? Why?

Remove one of the legs of the LED from the power dove. Connect the cylindrical dove mode above in series with the LED. What happened to the LED glow?

Change the shape of the cylindrical dove to make it thinner and longer. What happened to the LED glow?

Discussion :

Salt solution is conducting because of the ionic character of NaCl. Think of the mechanism of charge flow through the dove when current goes through it.

The electrical characteristic of doves change with time because of bio – degradation. Interesting to study it systematically.

You can make non uniform “wires” from the dove and study their resistance behavior.

Acknowledgement :

First seen at BVN-IAPT Anveshika, Delhi. Modified in the present form.

Hazard :

None