Question

Электрическая печь имеющая спираль из никелиновой проволоки сечением 1,5 квадратных милиметров и длиной 55 метров присоединяется к сети с напряжением 220 ват какова мощность у этой печи

Answer 1

R=po*L/S   p0=0,42   R=0.42*55/1.5=15.4 Ом
N=U²/R=220²/15.4=3143 Вт=3,14 кВт

Answer 2

Calculation of Power for the Electric Stove

To calculate the power of an electric stove, we need to use the formula:

Power (P) = Voltage (V) x Current (I)

In this case, the voltage is given as 220 volts (V). However, the current (I) is not provided. To calculate the current, we can use Ohm's Law:

Current (I) = Voltage (V) / Resistance (R)

The resistance of the electric stove can be calculated using the formula:

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

Given that the stove has a nickel-chromium wire with a cross-sectional area of 1.5 square millimeters (A) and a length of 55 meters (L), we need to find the resistivity (ρ) of the wire.

Unfortunately, the resistivity of the wire is not provided in the question. Therefore, we cannot calculate the current and, subsequently, the power of the electric stove.

If you have any additional information or if there is anything else I can assist you with, please let me know!