Question
1.4:
(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 no use on
macroscopic scale. Therefore, it is ignored and it is considered that electric
charge is continuous.
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