Question

a conductor carries a current of 0.2 Ampere find the amount of charge that will pass through the cross section of conductor in 30 seconds how many electrons will flow in this time interval if the charge of one electron is 1.6 x 10 the power minus ninteen

Answer 1

current is the change in charge per unit time .
e.g I = ∆Q/∆t

given ,
I = 0.2 A
∆Q = ?
∆t =30 sec

∆Q = i∆t =0.2 × 30 = 6 Columbs

we charge of 1 electrons = 1.6 × 10^-19 C

let n is the number of electrons
then,
n = Q/e
=6/1.6 x 10^-19
= 60/16 x 10^19
=3.75 x 10^19

hence , number of electrons passing cross section of conductor = 3.75 x 10^19

Answer 2

Answer:

current is the change in charge per unit time .

e.g I = ∆Q/∆t

given ,

I = 0.2 A

∆Q = ?

∆t =30 sec

∆Q = i∆t =0.2 × 30 = 6 Columbs

we charge of 1 electrons = 1.6 × 10^-19 C

let n is the number of electrons

then,

n = Q/e

=6/1.6 x 10^-19

= 60/16 x 10^19

=3.75 x 10^19

hence , number of electrons passing cross section of conductor = 3.75 x 10^19

Explanation: