Question

7.
What is the amount of charge possessed by 1 kg
of electrons?
(1) 1.76 x 1011 C
(2) 1.76 x 10-9 C
(3) 1.76 x 10-7 C
(4) 1.76 x 10-5 C​

Answer 1

Answer:

1) 1.76 x 1011 C

Explanation:

Charge of an electron: -1.602 10^-19 C

Mass of an electron: 9.11 * 10^-31 kg

Electrons in 1kg: 1/(9.11 10^-31) = 1.10 * 10^30.

Charge of 1kg of electrons: (1.10 * 10^30) (-1.602 * 10^-19) = -176. 10^11 C