Why does citrus fruit conduct electricity




















Electrical power increases as you connect more fruits. According to the website MadSci. Potatoes may also have a higher number of ions that can produce electricity. Other vegetables that conduct electricity due to their potassium and ionic content are tomatoes, carrots, sweet potatoes and cucumbers.

Foods soaked in brine or otherwise pickled, such as pickles, conduct electricity due to their salt content. Salt is high in ions and conducts electricity.

Is water a good conductor of electrical current? Is salt a good conductor of electrical current? How do you know? You may need at least 3 lemons per battery for any visible movement to occur on the voltometer.

Details Activity Length 15 mins. You can make a battery using a piece of fruit? Yes , technically, but not a very strong one! Objectives Describe the relationship between an electron and current electricity. Materials Per Pair of Students: lemon and other fruit, optional 1 copper strip 1 zinc strip you can use a galvanized nail, which is coated with zinc knife 2 copper wire leads each about 20 cm long with alligator clips on both ends LED bulb with a rating of no more than 2 volts the smaller the voltage, the better wire cutters wire strippers Per Class: multimeter or voltmeter optional Key Questions What happens when you connect the wire to the bulb?

What To Do Roll the lemon firmly on a counter to release some of the juices. Insert the one copper strip and one zinc strip vertically into the lemon, with one end sticking out. Do you think this battery is generating electricity or is there still something missing? Your battery can generate electricity but will only do so when the electrodes are connected with something that conducts electricity.

To make a connection attach the second aluminum strip to the part of the penny sticking out of the lemon with a plastic-coated paper clip. Make sure the aluminum touches the penny so electricity can pass between the copper and aluminum. You used an aluminum strip to create a connection; would you expect a plastic strip to work as well?

Do you know why you do not need to create a connection to the second electrode for this particular battery? As soon as the two aluminum strips touch one another, electricity will be produced in the battery and flow through the strips, from one electrode to the other.

Because you cannot see the electricity flowing, you can try to feel it. Keep the two strips about one centimeter apart and touch your fingertip to them. Can you feel a tingling, created by a small amount of electricity running from one aluminum strip to the other through your body? For more electrical juice and slightly stronger tingling sensation , you can build a second battery, identical to the first. You can choose a different spot on the lemon you just used or use a second lemon to build a second battery.

Note that you only need one aluminum strip to build a second battery. To connect the second one to the original find the aluminum strip of the first battery that serves as electrode. It has its end inserted in the lemon. Use a plastic-coated paper clip to attach the other end of this aluminum strip to the penny of the second battery.

This connects the aluminum electrode of the first battery to the copper electrode of the second battery. Test this set of connected batteries in a similar way as you tested the single battery, bringing the ends of the two aluminum foil strips sticking out of your battery set those that have a free end in contact with your fingertip.

Can you feel electricity running? If you could feel it well the first time, is this any different? Note: If you cannot feel the tingling sensation, check if each electrode—pennies and the aluminum strips stuck in the lemon—are inserted deep enough so they are in contact with lemon juice; make sure there is firm contact between the penny and its attached aluminum strip; and that the aluminum strips are not touching one another. If all is correct, maybe you need slightly more electricity to feel tingling.

You can test another person to see if he or she can feel the electricity or you can opt to add one more lemon battery to your set. Extra: Now that you can detect whether electricity is generated or not, try some different configurations. What happens if you let the aluminum strips touch?

What happens if you replace an aluminum strip with a plastic piece, an unfolded metal paper clip or a toothpick? Extra: Scientists call the way you connected your batteries in this activity "connecting batteries in series. Try it out by connecting the two copper electrodes to one another and attaching the two aluminum electrodes in the same way.

Note: You will need an extra strip of aluminum to do this. Scientists call this "connecting batteries in parallel. Take the fruit and roll a little on the table to make it juicy from inside. The skin should not be damaged.

Now insert copper nails and zinc nails in the same fruit, but make sure they are at least cm apart. They should not touch each other, nor should they puncture the fruit. About an inch of insulation around the wires should be removed so that they can wrap around the nails.

You can fix the wires in place using tape or crocodile clips. Once you wrap the wire around the second nail, the light bulb will light up! You can use a multimeter to measure the current flowing through the circuit.

In this experiment, when you use different quantities of fruit, you can measure how the size of the current changes. You can change the length of the wire and measure the size of the current again. You can change the fruit and constantly measure the change in the current size.

Continue to be the champion of your science class, present the above experiments and explain why citrus fruits are energized. Custom message. Send Inquiry Now. Related Products.



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