Question

an object with initial charge of 4 C is given 9×10^9 electrons. Calculate the net charge in object​

Answer 1

Answer:

Net charge = 4 - 1.44 × 10^-9

Explanation:

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

The answer is -10.4C

Explanation:

initial charge=4C

total number of electrons =9×10^19

total negative charge= 9×10^19×1.6×10^-19

= 14.4

net charge= 4-14.4

= -10.4C