Question

How many electrons constitute an electric charge of -16 micro coulomb

Answer 1

Explanation:

q=ne

n=e/q

where n=?

e=1.6×10power-19c

q=-16mc=-16×10power-6c

n=1.6×10power-19/-16×10power-6

n=10power-14

Answer 2

Concept:

The total charge which is present in an atom is given by the number of electrons multiplied by an electron charge. The formula for it is:

                                    Q=ne

Where Q is the total charge, n is the number of electrons and e is the charge of the electron.

Given:

Q= -16μC = -16×10⁻⁶ C

e= 1.6× 10⁻¹⁹C (Standard Value)

Find:

n = ?

Solution:

Q = ne

Rearranging the equation:-

n= Q / e

n= -16× 10⁻⁶/ 1.6× 10⁻¹⁹C

n = -1×10¹⁴ C

As the number can not be negative, the negative sign will be removed.

Hence, The number of electrons in a -16μC charge is 1×10¹⁴ C

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