Question

define quantization of charge.Why do we not consider it is practive?​

Answer 1

Quantization of charge means that when we say something has a given charge, we mean that that is how many times the charge of a single electron it has. ... So electrons have a a negative charge, negative charge

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Answer 2

Answer:

Let us consider numbers which include 0 in the first place

Now, sum of all four digit numbers formed = Sum of all numbers − Sum of numbers with 0 in the first place.

Sum of all the numbers =6(2+3+5+0)(1000+100+10+1)=66660

Sum of numbers with 0 in first place =2(2+3+5)(100+10+1)=2220

Hence, the answer =66660−2220=64440.