Question

ЭДС источника тока 40 В. Сопротивление внешнего участка цепи 36 Ом, а внутреннего участка 4 Ом. Определить ток в цепи и напряжение на внешнем участке цепи.

Answer 1

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Answer 2

Calculation of Current and Voltage in the Circuit

To determine the current in the circuit and the voltage across the external segment of the circuit, we need to apply Ohm's law and Kirchhoff's laws.

Given: - Electromotive force (EMF) of the current source: 40 V - Resistance of the external segment of the circuit: 36 Ω - Resistance of the internal segment of the circuit: 4 Ω

We can calculate the current in the circuit using Ohm's law, which states that the current (I) flowing through a conductor is equal to the voltage (V) across the conductor divided by its resistance (R):

I = V / R

Substituting the given values, we have:

I = 40 V / (36 Ω + 4 Ω) = 40 V / 40 Ω = 1 A.

Therefore, the current in the circuit is 1 A.

To calculate the voltage across the external segment of the circuit, we can use Kirchhoff's voltage