Question

The charge on an electron is 1.6 × 10-19C. Find the number of electrons that will flow per second to constitute a current of 2A.

Answer 1

Answer:

Current is the amount of charge passing through a conductor in a particular interval of time.

So according to the definition, the formula for the current is:

I = Q/t

I = 2 A and t = 1 sec

Therefore,

Q = I*t

Q = 2*1 = 2 C

One electon consists of a charge of 1.6*10^-19 C. Then the number of electrons passing would be:

Q = n*e

n = Q/e

n = 2/(1.6*10^-19) = 1.25*10^19 electrons

Explanation:

.

Answer 2

Answer:

I = Q/t

I =2 A and t = 1sec

Q = I × t = 1 × 2 = 2C

e = 1.6 × (10)-19C

No. of electrons passing = Q/e

No. of electrons passing = 2/(1.6 × (10)-19)

No. of electrons passing = 1.25 × (10)-19

Therefore, the number of electrons that will flow per second to constitutes a current of 2A is equal to 1.25 × (10)^-19 electrons.

Hope this helps you.....

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