Question

Сколько электронов должно проходить за 1 с через поперечное сечение металлического проводника , чтобы сила тока была равно 1 А

Answer 1

I=q/t =Ne/t  N=I*t/e = 1*1/1.6*10^-19=625*10^16

Answer 2

Calculating the Number of Electrons for a Current of 1 Ampere

To calculate the number of electrons that must pass through a cross-sectional area of a metallic conductor in 1 second to produce a current of 1 ampere, we can use the formula:

I = n * q * v

Where: - I = current (in amperes) - n = number of charge carriers per unit volume - q = charge of each carrier (in coulombs) - v = drift velocity of the charge carriers

By rearranging the formula, we can solve for n:

n = I / (q * v)

Finding the Charge of Each Electron

The charge of each electron is given by the elementary charge, denoted as e. The elementary charge is approximately equal to 1.6 x 10^-19 coulombs.

Determining the Drift Velocity

The drift velocity of charge carriers in a conductor can vary, but for a typical metallic conductor, it is on the order of millimeters per second.

Calculation

Using the given information and the formula for n, we can calculate the number of electrons required to produce a current of 1 ampere.

n = I / (q * v)

Substituting the values: - I = 1 ampere - q = 1.6 x 10^-19 coulombs (charge of each electron) - v = (assumed typical drift velocity for metallic conductors)

We can calculate the value of n using the provided information.

Result

The number of electrons that must pass through a cross-sectional area of a metallic conductor in 1 second to produce a current of 1 ampere can be calculated using the formula and the given values.

Note: The specific value of the drift velocity for the metallic conductor in question is needed to provide an exact numerical answer.