Question

if some moving electrons are constituting 2A current after flowing for 4.8 second. How many electrons are flowing​

Answer 1

The basic formula for electric current through a conductor is ,

I= nq/t

Where, I is electric current, elementary charge and n is number of electrons.

Now what you have given is, I= 2A, q= 1.6x10^-19 C and t= 1 second

Note: unit of current is ampere only when charge is measured in coulomb and time is measured in seconds. If time is measured in hours or mins, you first have to convert it into seconds. Also, since n is number of electrons, it is a unitless quantity.

Now plugging in all the values in the advice formula will give you answer i.e number of electrons.

2= n(1.6x10^-19)/1

n= 2/1.6x10^-19

Answer 2

Answer:

We know that

I = Q/t

so,

Q = It

Q = 2*4.8 = 9.6 C

n = no. of electrons

e = charge on one electron

By Q = ne

$9.6 = n \times 1.6 \times 10 {}^{ - 19}$

$9.6 \div 1.6 \times 10^{ - 19} = n$

$6 \times 10^{19} = n$

hope it helps :)