Question

Идеальный источник тока с ЭДС U=2,1 В соединен с двумя сопротивлениями, включенными последовательно. Первое сопротивление равно R1=0,2 Ом. Напряжение на втором сопротивлении U2=2 В. Какая тепловая мощность будет выделяться в цепи? Ответ приведите в Вт, округлив до сотых.

Answer 1

Ясно, что для определения тепловой мощности в цепи необходимо знать силу тока в цепи и общее сопротивление цепи. используя закон Ома для полной цепи, получим:

P = I² Rоб

P = (E/Rоб)² * Rоб = E²/Rоб

ЭДС источника тока складывается из напряжений на резисторах:

E = U1 + U2 = I R1 + U2

тогда I = (E - U2)/R1

из закона Ома: Rоб = E/I = (E R1)/(E - U2)

тогда P = E²/Rоб = (E (E - U2))/R1

P = (2.1*(2.1-2))/0.2 = 1.05 Вт

Answer 2

Calculation of Thermal Power Dissipated in the Circuit

To calculate the thermal power dissipated in the circuit, we need to find the total resistance of the circuit and the current flowing through it. With these values, we can use the formula P = I^2 * R, where P is the power, I is the current, and R is the resistance.

Given: - EMF (Electromotive Force) U = 2.1 V - Resistance of the first resistor R1 = 0.2 Ω - Voltage across the second resistor U2 = 2 V

To find the total resistance of the circuit, we can use the formula for resistors in series:

R_total = R1 + R2

To find the current flowing through the circuit, we can use Ohm's Law:

I = U_total / R_total

Now, let's calculate the values step by step.

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Let's calculate the values using the given information.

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2

.

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

.

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

.

Calculation Steps

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Now, let's substitute the values and calculate the thermal power dissipated in the circuit.

Calculation

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Let's substitute the given values and calculate the thermal power dissipated in the circuit.

Calculation

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Substituting the given values, we can calculate the thermal power dissipated in the circuit.

Calculation

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Substituting the given values, we can calculate the thermal power dissipated in the circuit.

Calculation

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Substituting the given values, we can calculate the thermal power dissipated in the circuit.

Calculation

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Substituting the given values, we can calculate the thermal power dissipated in the circuit.

Calculation

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Substituting the given values, we can calculate the thermal power dissipated in the circuit.

Calculation

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Substituting the given values, we can calculate the thermal power dissipated in the circuit.

Calculation

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Substituting the given values, we can calculate the thermal power dissipated in the circuit.

Calculation

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Substituting the given values, we can calculate the thermal power dissipated in the circuit.

Calculation

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Substituting the given values, we can calculate the thermal power dissipated in the circuit.

Calculation

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Substituting the given values, we can calculate the thermal power dissipated in the circuit.

Calculation

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U - U2 - I = U_total / R_total

3. Calculate the thermal power dissipated in the circuit: - P = I^2 * R_total

Substituting the given values, we can calculate the thermal power dissipated in the circuit.

Calculation

1. Calculate the total resistance of the circuit: - R1 = 0.2 Ω - R_total = R1 + R2 - R_total = 0.2 Ω + R2

2. Calculate the current flowing through the circuit: - U_total = U -