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Quantization of charges class 12th physics

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"Quantization of Charges" is a concept in physics that refers to the observation that the electric charge of any object is always a multiple of the elementary charge. In other words, charge is quantized - it cannot take on any arbitrary value, but only discrete values.

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  • May 9, 2023
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The Quantization of Charge
Quantization of charge is a simple concept that states that charge is always a multiple of a
certain quantity (represented by q) called the elementary charge. The elementary charge (e) is
equal to 1.6x10^-19 C.


Static Electricity and the Comb
Static electricity can be generated by rubbing certain materials together, such as a plastic
comb and a piece of paper. When the comb is rubbed across the paper, the comb gains extra
energy and becomes charged. This charge can then be transferred to other objects, such as a
sticker on the paper.


The Law of Charge Conservation
The Law of Charge Conservation states that the total amount of charge in a closed system
remains constant. When one object gains a certain amount of charge, another object in the
system must lose the same amount of charge.


The Quantization of Charge in Electrons
Electrons are negatively charged particles that orbit the nucleus of an atom. The charge of an
electron is equivalent to -e, or -1.6x10^-19 C. The number of electrons in an atom is equivalent
to the number of protons in the nucleus.


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