Question

4. За какое время электрический утюг выделит количество теплоты 800 Дж, если сила тока в спирали 2 А, а напряжение в сети 220 Вд​

Answer 1

Ответ: 1,8с

Объяснение:

Дано:

Q=800Дж

I=2А

U=220В

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t-?

Q=UIt

t=Q/(UI)=800/(220*2)=1,8с

Answer 2

Дано:

Q = 800 Дж

I = 2 A

U = 220 В

Найти:

Время — ?

Решение:

Q = U * I * T

T = Q / I * U

T = 800 / 2 * 220

T ≈ 1.8 секунд

Ответ — ≈1.8 с

Answer 3

Calculating the Time Required for an Electric Iron to Generate 800 J of Heat

To calculate the time required for an electric iron to generate 800 J of heat, we can use the formula:

Time (t) = Heat (Q) / (Current (I) * Voltage (V))

Given: - Heat (Q) = 800 J - Current (I) = 2 A - Voltage (V) = 220 V

Using the given values in the formula: Time (t) = 800 J / (2 A * 220 V)

Calculation:

Time (t) = 800 J / (440 W)

Therefore, the time required for the electric iron to generate 800 J of heat is approximately 1.82 seconds.

This calculation is based on the formula for calculating time using the given values of heat, current, and voltage