Question

К источнику с ЭДС 12 В и внутренним сопротивлением 1 ОМ подключен реостат, сопротивление которого 5 Ом. Найти силу тока в цепи и напряжение на зажимах источника.

Answer 1

I=E/(R+r)= 12/6=2 A
U=IR=2*5=10 В

Answer 2

Вроде всё расписал нормально)

Answer 3

Calculation of Current and Voltage

To find the current and voltage in the circuit, we need to consider the given values:

- EMF (Electromotive Force) of the source: 12 V - Internal resistance of the source: 1 Ω - Resistance of the rheostat: 5 Ω

Let's calculate the current and voltage in the circuit.

The total resistance in the circuit can be calculated by adding the internal resistance of the source and the resistance of the rheostat:

Total resistance (R_total) = Internal resistance + Resistance of rheostat = 1 Ω + 5 Ω = 6 Ω.

Using Ohm's law, we can calculate the current (I) in the circuit:

I = EMF / R_total = 12 V / 6 Ω = 2 A.

Therefore, the current in the circuit is 2 A.

To find the voltage across the terminals of the source, we can use the formula:

Voltage across the terminals of the source = EMF - (Current * Internal resistance) = 12 V - (2 A * 1 Ω) = 10 V.

Therefore, the voltage across the terminals of the source is 10 V.

Conclusion

In summary, the current in the circuit is 2 A, and the voltage across the terminals of the source is 10 V.

Please note that the calculations are based on the given values and may vary depending on the specific circuit configuration.