Question

which of the following charge is not possible on a body?
(a) +4.8x10^-13C
(b) -3.2x10^-18C
(c) -6.4x10^-19C
(d) -8.0x10^-20C​

Answer 1

-8.0x10^-20 C charge is not possible.

• The minimum amount of charge possible is the charge of a single electron [i.e. -1.6 × 10^(-19) C]

• -8.0 × 10^(-20) C is a charge smaller than the charge of an electron.

• However, the other options (a, b and c) contain charges which are integral multiples of charge of a single electron. So, those charges are possible.

• The charges possible are : $\pm 1e, \pm 2e, \pm 3e , ...$

Hope It Helps.