Q11 of 15 Page 118

Make a battery from four lemons and test it with a LED in the circuit.

Requirements: Four pieces of copper wire, four zinc coated nails. four lemons and a LED



Steps to prepare lemon battery:


Step 1: First we will wrap the copper wire around the nails as shown in the figure below.



Step 2: Once all the nails are connected to the copper wire, we will connect each lemon to each other by screwing the nails.



Step 3: We will continue to do this with the rest of the lemons and set up the circuit as shown below.



Step 4: Now connect an LED bulb to one end of copper wire and another end of zinc nail.



You will observe that the bulb starts to glow.


How it works:


i. The zinc coated nails and copper wire will act as an anode and cathode respectively.


ii. The electrons will leave the zinc coated nails to the cathode and travel through the ionic compound to the copper wire which is a cathode.


iii. The acceptors are the electrons.


iv. This will create an electric current which we can use to power an LED.


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