Question

How much charge is said to be flowing if 5 A current passes through a wire every second? ​

Answer 1

Answer:

Given: Current I=5 A

To find: Number of electrons passing per second , for 5 A, n = ?

I=Qt

Charge of an electron

e=1.6×10−19 coulomb

Then 1 coulomb =11.6×10−19 electrons

i.e., 1 coulomb =6.25×1018 electrons

For 1 ampere current, no. of electrons will be 6.25×1018 electrons. For 5 ampere current, it is 5×6.25×1018 electrons

=3.125×1019 electrons

Alter:

No. of electrons passing per second , n =?

I=Qt

Where e→Charge of electron which is equal to 1.6×10−19C

Q is 'n' no of charges i.e., Q=ne

Here t = IS, ⇒I=net=1×te=5×11.6×10−19=51.6×1019

Number of Electrons,

n=3.125×1019 electrons

Answer 2

6

Explanation:

Current = Charge / time

Here current =5A, time=1 Second

So, total charge flown in 1 second= 5 coulomb

Charge on 1 electron =1.6*10^-19

Therefore no of charge particles= 5/(1.6*10^-19) = 3.125*10^19

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