aviral_sir11 answered this
Well here is a simple activity you can do!
Rub a comb or a plastic scale on dry hairs for 2-3 minutes and then try it over a few very small pieces of paper. U would see the comb or scale will start attracting the paper pieces.
This is because the comb or the scale has got charged due to rubbing with the hairs.
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Kanishtha Mehta answered this
here is 1 more experiment
rub a glass rod with a dry piece of silk cloth.it will get positively charged. touch the disk of the electroscope with the positively charged glass rod . you will observe that the leaves diverge due to similar positive charges on them. the electroscope leaves remains diverged, even when u remove the glass rod. this shows that the electroscope is charged by conduction.
hope it will help u
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Salini Mukherjee answered this
NO
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Aditya. Rajput answered this
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Kunal answered this
i think this can also be useful
A body being repelled by charged body (could be positive or negative) indicates that the former body was charged whereas a body attracted by a charged body (could be positive or negative) does not necessarily prove that the former body is charged.
A charged body can induce charges of the opposite sign in an uncharged body. As this induced charge is of the opposite sign that of the originally charged body, they will attract each other.
If the test body was already oppositely charged to that of the tester charge, then they will attract each other.
Therefore, attraction is not a sure test for the presence of charge.
An uncharged body can in now way be repelled by a charged body. It can only be attracted due to induction of opposite charges on the charged body.
However, if the test body is charged, it will be repelled by a tester charge of the same sign.
Therefore, repulsion is a sure test for the presence of charge.
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Kunal answered this
An object with a suspected static electric charge is brought near the metal plate or ball of the electroscope. Electrical charges move to the metal and down to the foil leaves, which then repel each other. Since each leaf has the same charge (positive or negative), they repel each other.
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Yug Shah answered this
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Gargi Paddalwar answered this
Static Flyer – The Flying Bag
Charge a balloon and use the electrical charges of static electricity to create flying objects!
- Use a pair of scissors to cut a strip from the open end of the produce bag. Once the strip is cut, you should have a plastic band or ring.
- Blow up a balloon to its full size and tie off the end.
- Rub the cotton towel over the surface of the balloon for 30-45 seconds.
- Flatten the plastic band on a hard surface and gently rub the towel on the band for 30-45 seconds.
- Hold the plastic band about one foot over the balloon and release it. The plastic band is levitating!
As you rub both the balloon and the plastic on your hair they touch and then release thousands of hairs.Both the balloon and the plastic bag are negatively charged so they repel one another which means that you should be able to balance the plastic bag above the balloon, causing it to levitate.
HOPE IT HELPS YOU :)
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A.b.kanika answered this
Without an electrostatic machine, some experiments are easily performed with low cost generators of charge. A first source of charge (positive or negative) is a common piezoelectric lighter [2] slightly modified as shown
in Fig. 1. Usually, by pressing the handle, a positive charge is obtained; releasing the handle after touching the ground, a negative charge is obtained. Another generator of charge is a cylindrical version of the Volta's Electrophorus developed through beautiful ideas of D.S. Ainslie [3-5]. Our practical realization is shown in Fig. 2. The apparatus works as a common electrophorus and gives a positive charge being negative the charge on PVC conduit. Our version is developed as portable instrument, but it is obvious that a longer device will give a greater amount of charge. With metal rod (a brass or aluminum tube) an electroscope may be charged by direct contact (or, obviously, by induction). You may charge the can electroscopes by conduction several times in succession.
A third source of charge very useful and inexpensive was purchased in Internet and named "Fun Fly Stick". It is a handle little Van De Graaf generator. If this generator is joint to a stainless hollowed sphere having 100 mm in diameter, a voltage of about 50 kV is reached and beautiful but not dangerous sparks happen between the sphere and your knuckles.
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Tanish Kar answered this
Static Flyer – The Flying Bag
Charge a balloon and use the electrical charges of static electricity to create flying objects!
- Use a pair of scissors to cut a strip from the open end of the produce bag. Once the strip is cut, you should have a plastic band or ring.
- Blow up a balloon to its full size and tie off the end.
- Rub the cotton towel over the surface of the balloon for 30-45 seconds.
- Flatten the plastic band on a hard surface and gently rub the towel on the band for 30-45 seconds.
- Hold the plastic band about one foot over the balloon and release it. The plastic band is levitating!
As you rub both the balloon and the plastic on your hair they touch and then release thousands of hairs.Both the balloon and the plastic bag are negatively charged so they repel one another which means that you should be able to balance the plastic bag above the balloon, causing it to levitate.
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Sakthi G answered this
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