Why does the paper strip open up when touched with a charged rod?
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If you are a higher secondary student:
When a charged rod is brought near a paper strip, the rod induces an electric dipole, so charge of opposite polarity (w.r.t rod) is induced in the paper. As paper is not that much a good conductor, the effect is less, but just enough to cause the paper strip to open up.
If you are a primary or secondary school student, or someone just wanting to understand, then here's a simpler explanation:
The rod is charged. Let us assume it's positively charged. When it's brought near the paper strip, the electrons in the paper feel attraction towards the positively charged rod, so they go towards the end of paper strip closer to the rod. As a result, negative charge accumulates on one side of paper, and positive charge goes to the other end. So, a paper strip is charged by the rod. This is called induction. And then, due to electromagnetic attraction between the rod and paper strip, the strip opens up.
When a charged rod is brought near a paper strip, the rod induces an electric dipole, so charge of opposite polarity (w.r.t rod) is induced in the paper. As paper is not that much a good conductor, the effect is less, but just enough to cause the paper strip to open up.
If you are a primary or secondary school student, or someone just wanting to understand, then here's a simpler explanation:
The rod is charged. Let us assume it's positively charged. When it's brought near the paper strip, the electrons in the paper feel attraction towards the positively charged rod, so they go towards the end of paper strip closer to the rod. As a result, negative charge accumulates on one side of paper, and positive charge goes to the other end. So, a paper strip is charged by the rod. This is called induction. And then, due to electromagnetic attraction between the rod and paper strip, the strip opens up.
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when we take a charged rod so near of a paper then same amount and opposite charge automatically generate at the nearest distance of the paper .
we know that two opposite charge attract each other so the paper strip open up.
As the low of convention of energy we can not create energy so
in the highest distance of the paper from rod, create the same amount of same charge to oppose the charge that was created in the nearest pole.
if you want a pic about this then you can sms me. I will provide you a picture about it.
we know that two opposite charge attract each other so the paper strip open up.
As the low of convention of energy we can not create energy so
in the highest distance of the paper from rod, create the same amount of same charge to oppose the charge that was created in the nearest pole.
if you want a pic about this then you can sms me. I will provide you a picture about it.
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