Question

You can make a fun pen for yourself. Take a conducting metal plate
and spread a moist paste of potassium iodide and starch. Connect
the plate to a battery as shown in Fig. 14.11. Now using the free
end of the wire, write a few letters on the paste. What do you see?​

Answer 1

Answer:

Explanation:

You can make a fun pen for yourself. Take a conducting metal plate

and spread a moist paste of potassium iodide and starch. Connect

the plate to a battery as shown in Fig. 14.11. Now using the free

end of the wire, write a few letters on the paste. What do you see?​

Answer 2

Answer: The written letters will be the result of deposition of the material connected to the positive terminal of the battery.

Explanation: The moment we touch the wire to the metallic plate the electric circuit gets completed and reactions starts to occur on the metal plate. The positive ions from the metal plate will deposit on the wire attached to the negative terminal and to compensate the loss same amount of material will deposit on plate from other end of wire in the form of written letter by us.