Question

Каково напряжение на концах железного проводника длиной 100 метров и площадью поперечного сечения 1 мм2 если по нему проходит ток силой 3,6 А? Срочнооооооо!!!!

Answer 1

Ответ:

36 В

Объяснение:

U = IR = I (rl)/S = 36 В

Answer 2

U=I*R=I*p*L/S=
3,6*0,1*100/1=36 В.
Удельное сопротивление железа
р=0,1 Ом*мм^2/м.

Answer 3

Calculating Voltage Across the Iron Conductor

To calculate the voltage across the iron conductor, we can use Ohm's law, which states that voltage (V) is equal to the current (I) multiplied by the resistance (R) of the conductor. The resistance can be calculated using the formula:

V = I * R

Where: - V = Voltage (in volts) - I = Current (in amperes) - R = Resistance (in ohms)

Calculating Resistance of the Iron Conductor

The resistance of the iron conductor can be calculated using the formula:

R = ρ * (L / A)

Where: - R = Resistance (in ohms) - ρ = Resistivity of the material (in ohm-meter) - L = Length of the conductor (in meters) - A = Cross-sectional area of the conductor (in square meters)

Applying the Formulas

Given: - Length of the conductor (L) = 100 meters - Cross-sectional area of the conductor (A) = 1 mm^2 = 1 * 10^-6 m^2 - Current (I) = 3.6 amperes

We need to find the resistivity of iron to calculate the resistance. Let's proceed with finding the resistivity of iron.

Finding the Resistivity of Iron

The resistivity of iron is approximately 9.71 × 10^-8 ohm-meter [[1]].

Calculating the Resistance

Using the resistivity of iron, we can calculate the resistance of the iron conductor:

R = (9.71 × 10^-8) * (100 / 1 * 10^-6)

Calculating the Voltage

Now that we have the resistance, we can calculate the voltage across the iron conductor using Ohm's law:

V = I * R

Substitute the values: - I = 3.6 amperes - R = (9.71 × 10^-8) * (100 / 1 * 10^-6)

This will give us the voltage across the iron conductor.