Question

Потужність, яку споживає з мережі електрокамін при напрузі 220 В дорівнює 2 кВт. Якою є сила струму в колі та електричний опір каміна?

Answer 1

Ответ:

I ≈ 9.1 А

R ≈ 24.2 Ом

Объяснение:

Потребляемая мощность из сети электрокамина при напряжении 220 В равна 2 кВт. Какова сила тока в цепи и электрическое сопротивление камина?

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Дано:

U = 220 В

N = 2 кВт = 2000 Вт

I = ?

R = ?

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N = U*I

Сила тока в цепи:

I = N/U = 2000/220 ≈ 9.1 А

U = I*R

Сопротивление камина:

R = U/I = 220/9.1 ≈ 24.2 Ом

Answer 2

Відповідь: 9,09 А         24,2 Ом

Пояснення:

Answer 3

Calculation of Current and Electric Resistance

To determine the current and electric resistance of an electric fireplace consuming 2 kW of power at a voltage of 220 V, we can use Ohm's Law. Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to its resistance.

The formula for Ohm's Law is:

I = V / R

Where: - I is the current in amperes (A) - V is the voltage in volts (V) - R is the resistance in ohms (Ω)

Given that the power consumed by the electric fireplace is 2 kW and the voltage is 220 V, we can calculate the current and resistance.

Calculation of Current (I)

The power consumed by the electric fireplace is given in kilowatts (kW). To convert it to watts (W), we multiply it by 1000.

Power (P) = 2 kW = 2,000 W

Using the formula:

P = V * I

We can rearrange the formula to solve for current (I):

I = P / V

Substituting the given values:

I = 2,000 W / 220 V

Calculating the value:

I ≈ 9.09 A

Therefore, the current flowing through the electric fireplace is approximately 9.09 amperes.

Calculation of Electric Resistance (R)

To calculate the electric resistance, we can rearrange Ohm's Law formula:

R = V / I

Substituting the given values:

R = 220 V / 9.09 A

Calculating the value:

R ≈ 24.18 Ω

Therefore, the electric resistance of the electric fireplace is approximately 24.18 ohms.

In summary, the current flowing through the electric fireplace is approximately 9.09 amperes, and the electric resistance of the fireplace is approximately 24.18 ohms.