Question

The current flowing through a conductor
0.2 A / 30 seconds through the cross section of that conductor
How many electronswill flow? The charge of an electron
1.6 x 10-19 CC.​

Answer 1

Answer:

Given,

I=0.2A

t=30sec

q=1.6×10

−19

C

We know,

Charge= Current × Time

Q=I×t

⇒Q=0.2×30=6C

Therefore, If n electrons flow and q is the charge on one electron, then total charged passed,

Q=n⋅q

∴n=

q

Q

=

1.6×10

−19

6

=3.75×10

19

so, 3.75×10

19

electrons will flow through the cross section of the conductor.

Answer 2

• • e = 1.6 * 10-19 Coulombs

• • current I = 0.2 Amperes .

• time duration t= 30 seconds

Charge = Q = current * time duration = [* t = 0.2 sec * 30 sec =6 coulombs

number of electrons that are equal to this charge = 6 Coulombs / 1.6 * 10-19 coulombs

= 3.75 * 1019

If this many electrons pass through a cross section of the conductor in 30 seconds time.