Question

find the number of electrons present in 13.8 C of charge.
HINT: use Q = me
Class: 10th​

Answer 1

Given:

☛ Q = 13.8 C

Also,

1 e = 1.6 × 10^19 C

To Find:

☛ Number of electrons

Solution:

We know,

➜ Q = n × e

Where,

☛ n = number of electrons

☛ e = charge contained in 1 electron

☛ Q = amount of charge

Now,

$</p><p></p><p>\Rightarrow \quad Q = n \times e</p><p></p><p>\\ \\</p><p></p><p>\Rightarrow \quad 13.8 = n \times 1.6 \times 10^{-19} </p><p></p><p>\\ \\</p><p></p><p>\Rightarrow \quad n = \frac{ \cancel{13.8}}{\cancel{1.6} \times 10^{-19}} </p><p></p><p>\\ \\</p><p></p><p>\Rightarrow \quad n = 8.625 \times 10^{19} </p><p></p><p>\\ \\</p><p></p><p>$

Hence, There are $\bold{ 8.625 \times 10^{19}}$ electrons in 13.8 C.

Answer 2

Answer:

8.625×10^(19) elcetrons.

Explanation:

Refer to attachment please.