Question

an object with an initial charge of 4 c is given 9×10^19 addition electrons.calculate net charge on the object​

Answer 1

$\sf\small\green{Your Answer :-}$

Initial charge is 4C

Total no.of electrons given = 9 × 10^9

Total negative charge of given electron = No.of electrons × Charge of 1 electron

=> 9×10^9 × 1.6×10^-19C

=> 1.44 × 10^-9C

Net charge = 4 - 1.44 × 10^-9

Answer 2

Answer:

must be the volume of water used for 20g