(a) Explain the meaning of the statement electric charge of a body is quantised.
(b) Why can one ignore quantisation of electric charge when dealing with macroscopic i.e., large scale charges?
Answers
QUESTION;
(A) Explain the meaning of the statement electric charge of a body is quantised.
(B) Why can one ignore quantisation of electric charge when dealing with macroscopic i.e. , large scale charges?
ANSWER:
(a) Electric charge of a body is quantized. This means that only integral ( 1 , 2 , .... , n ) number of electrons can be transferred from one body to the other. Charges are not transferred in fraction.
Hence, a body possesses total charge only in integral multiples of electric charge.
(b) In macroscopic or large scale charges, the charges used are huge as compared to the magnitude of electric charge.
Hence, quantization of electric charge is of not use on macroscopic scale.
Therefore, it is ignored and it is considered that electric charge is continuous.
Answer:
(i) The ‘electric charge of a body is quantized’ means that only integral (1, 2, …n) numbers of electrons can be transferred from a body to another.
Charges cannot get transferred in fractions. Hence, the total charge possessed by a body is only in integral multiples of electric charge.
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(ii) In the case of large scale or macroscopic charges, the charge which is used over there is comparatively too huge to the magnitude of the electric charge. Hence, on a macroscopic level, the quantization of charge is of no use Therefore, it is ignored and the electric charge is considered to be continuous.
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