Question

Три проводника сопротивлением 3 ом 5 ом и 7 ом включены последовательно сила тока в проводниках 2 а вычислите общее напряжение на всём участке цепи?

Answer 1

Ответ: 30 В
Решение на фото

Answer 2

Calculation of Total Voltage in the Circuit

To calculate the total voltage in the circuit where three resistors with resistances of 3 ohms, 5 ohms, and 7 ohms are connected in series and a current of 2 A flows through the circuit, we can use Ohm's law and the formula for calculating the total resistance in a series circuit.

According to Ohm's law, the voltage (V) across a resistor is given by the product of the current (I) flowing through it and the resistance (R) of the resistor, i.e., V = I * R.

The total resistance (R_total) in a series circuit is the sum of the individual resistances, i.e., R_total = R1 + R2 + R3.

Using these principles, we can calculate the total voltage in the circuit.

1. Calculation of Total Resistance (R_total): - The total resistance in a series circuit is the sum of the individual resistances. - Given resistances: R1 = 3 ohms, R2 = 5 ohms, R3 = 7 ohms. - Using the formula for total resistance in a series circuit: R_total = R1 + R2 + R3. - Substituting the given values: R_total = 3 ohms + 5 ohms + 7 ohms. - Calculating the total resistance: R_total = 15 ohms. 2. Calculation of Total Voltage (V_total): - The total voltage in the circuit can be calculated using Ohm's law: V_total = I * R_total. - Given current (I) = 2 A and total resistance (R_total) = 15 ohms. - Substituting the given values: V_total = 2 A * 15 ohms. - Calculating the total voltage: V_total = 30 volts.

Therefore, the total voltage across the entire circuit is 30 volts when a current of 2 A flows through the circuit.

I hope this helps! If you have further questions or need additional assistance, feel free to ask.