Question

СРОЧНОООООО ПОМОГИТЕ ДАЮ 20 БАЛЛОВ ОТМЕЧУ ЛУЧШЕМ 6. Первый резистор с сопротивлением R1 = 12 Ом подключен последовательно к резистору сопротивлением R2 = 8 Ом. А) Определите общее сопротивление цепи: ______________________________________ [2б] В) Определите силу тока в цепи, е-сли общее напряжение 22 В: _____________________ [2б] С) Определите работу тока за 360 с: __________________________________________ [2б]

Answer 1

Ответ:

Объяснение:

6. Первый резистор с сопротивлением R₁ = 12 Ом подключен последовательно к резистору сопротивлением R₂ = 8 Ом.

А) Определите общее сопротивление цепи:

R = R₁ + R₂ = 12 + 8 = 20 Ом

В) Определите силу тока в цепи, если общее напряжение 22 В:

I = U / R = 22 / 20 = 1,1 Ом

С) Определите работу тока за 360 с:

A = U·I·t = 22·1,1·360 ≈ 8  700 Дж

Answer 2

Calculation of Total Resistance (A)

To determine the total resistance of the circuit, we need to calculate the equivalent resistance of the two resistors connected in series.

The formula to calculate the total resistance in a series circuit is:

Total Resistance (R_total) = R1 + R2

Given that R1 = 12 Ω and R2 = 8 Ω, we can substitute these values into the formula:

R_total = 12 Ω + 8 Ω = 20 Ω [[1]]

Therefore, the total resistance of the circuit is 20 Ω.

Calculation of Current (B)

To calculate the current flowing through the circuit, we can use Ohm's Law, which states that the current (I) is equal to the voltage (V) divided by the resistance (R):

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

In this case, we are given that the total voltage in the circuit is 22 V.

Substituting the values into the formula:

I = 22 V / 20 Ω = 1.1 A [[2]]

Therefore, the current flowing through the circuit is 1.1 A.

Calculation of Work Done by Current (C)

To calculate the work done by the current in the circuit, we need to know the power (P) and the time (t).

The formula to calculate work (W) is:

Work (W) = Power (P) × Time (t)

The power can be calculated using the formula:

Power (P) = Current (I) × Voltage (V)

Given that the current is 1.1 A and the voltage is 22 V, we can calculate the power:

P = 1.1 A × 22 V = 24.2 W [[3]]

Now, we can calculate the work done by the current over a time of 360 s:

W = 24.2 W × 360 s = 8712 J [[4]]

Therefore, the work done by the current in the circuit over a time of 360 s is 8712 J.