Question

7. What is the amount of charge possessed by 1 kg of electrons?
(1) 1.76 x 1011 C
(2) 1.76 * 10-9 C
(3) 1.76 x 10-70
(4) 1.76 * 10-5 c
Sol. Answer (1)​

Answer 1

Given,

1 kg of electrons

mass of electrons = 9.1 × 10-31 kg

No. of electron = 1/(9.1 × 10 -31 )

Charge of 1 kg of electron = n.e

= 1/ (9.1 × 10-31) × 1.6 × 10-19 C

= 1.76 × 1011 C