Question

Чему равна площадь поперечного сечения проводника медной проволоки длиной 0,6 км, если ее сопротивление равно 375 Ом? Помогите пожалуйста завтра экзамен по физике... ( если не трудно то с дано и системой си)

Answer 1

R=(p*l)/S
Где: p- удельное сопротивление [(Ом*мм^2)/м]
l- длина проводника [м]
S- площадь поперечного сечения [мм]
R-сопротивление [ом]

Выводим из формулы S.
S= (pl)/R
p (медн. проволоки)= 0.0175 [(ом*мм^2)/м]
l=0.6км=600 [м]
R=375 [ом]
S=(0.0175*600)/375
S=0.028 [мм]

Answer 2

S=pl/R
p=0.017
l=600м
R=375 Ом
______
S=0,17*600/375=0,272м^2

 

Answer 3

Calculation of the Cross-Sectional Area of a Copper Wire Conductor

To calculate the cross-sectional area of a copper wire conductor, we can use the formula:

Resistance (R) = Resistivity (ρ) x Length (L) / Cross-Sectional Area (A)

Given: - Length (L) = 0.6 km = 600 m - Resistance (R) = 375 Ω

We need to find the cross-sectional area (A) of the copper wire conductor.

To proceed with the calculation, we need to know the resistivity of copper. The resistivity of copper is approximately 1.68 x 10^-8 Ω·m.

Using the formula mentioned above, we can rearrange it to solve for the cross-sectional area (A):

A = ρ x L / R

Substituting the given values:

A = (1.68 x 10^-8 Ω·m) x (600 m) / (375 Ω)

Calculating this expression will give us the cross-sectional area of the copper wire conductor.

Please note that the given sources do not provide the exact value for the cross-sectional area of the copper wire conductor. However, you can use the formula and the provided values to calculate it.

Good luck with your physics exam! If you have any further questions, feel free to ask.