Question

How many electrons are transported by a current 1.2A flowing for 16 min and 40 sec

Answer 1

CURRENT =CHARGE/TIME

thus charge =current*time

=1.2*(time in seconds)=1.2*(16*60+40)=1.2*(1000)=1200 coulombs

Answer 2

The number of electrons flowing for 16 min and 40 sec are $7.5\times 10^{21}$.

Explanation:

Given that,

Current, I = 1.2 A

Time, t = 16 min and 40 sec = 960 s + 40 s = 1000 s

To find,

Number of electrons.

Solution,

Electric current is defined as the electric charge per unit time. It is given by :

$I=\dfrac{q}{t}$

Since, q = ne

$I=\dfrac{ne}{t}$

$n=\dfrac{It}{e}$

$n=\dfrac{1.2\times 1000}{1.6\times 10^{-19}}$

$n=7.5\times 10^{21}\ electrons$

So, the number of electrons flowing for 16 min and 40 sec are $7.5\times 10^{21}$.

Learn more,

Electric current

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