Question

500 electrons are flowing through a cross section of a wire in 1 second. Calculate

the current flowing through it. (charge on electron is = 1.6 X 10-19 coulomb)​

Answer 1

Answer:

0.625×10

19

electrons

Explanation:

The current is defined as rate of flow of charged particle.i.e.

i =

t

Q

Hence the charge flown is,

Q =i t

Hence Q =1.0×1=1C

The charge Q is due to electrons, therefore,

Q =N×e

Here Q =1C

If N is number of electrons passing and e is the electronic charge of value 1.6×10

−19

Then,

N =

e

Q

=

1.6×10

−19

1

=0.625×10

19

electrons

Answer 2

Answer:

8 X 10^-17 Amperes

Explanation:

Given,

No. of electron flowing = 500

Charge on 1 electron = 1.6 X 10^-19 coulomb

Charge on 500 electron = 500 X 1.6 X 10^-19

=800.0 X 10^-19

= 8 X 100 X 10^-19

= 8 X 10^-17 coulomb

Now,

Current = total charge flowing/ time

= 8 X 10^-17/1

= 8 X 10^-17 Ampere

I hope it will helps you.