If 1.34 ✕ 1020 electrons move through a pocket calculator during a full day's operation, how many coulombs of charge moved through it?

Given :

Number of operations move through a pocket calculator during a full day's operation , .

To Find :

How many coulombs of charge moved through it .

Solution :

We know , charge in  one electron is :

So , charge on n electron is :

Therefore , -21.44 coulombs of charge is moved through it .

Hence , this is the required solution .

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg