Question

16ampere current flowing across a conductor in 5sec then how many number of electrons flowing??​

Answer 1

Answer: 50*10^19

Q=It → 80C

Q=ne ; n=Q/e

⇒n=80/1.6*10^-19

⇒ n=50*10^19

Explanation:

Sup,

Q(charge)= I(current)* T(time)

Q= N(no of electrons) * e (Charge of electrons)

⇒ Q=it  

⇒  16A * 5s

⇒  80C(coulomb ; Si unit of charge)

We know,

charge of electron = 1.6* $10^{-19}$

Charge 'Q'= 80

⇒Q=Ne

⇒  N=Q/e

⇒ N= 80/(1.6* $10^{-19}$)

⇒ N= 50*10^19 [it becomes positive 19 because it was in the denominator}

so number of electrons is 50*10^19