Question

ЭДС источника тока 2В. При силе тока в сети 2А напряжение на зажимах источника тока 1,8В. Найдите внутреннее сопротивление источника тока.

Answer 1

I=E/R+r
E=I(R+r)
E=IR + Ir
I=U/R
U=IR
E=U+Ir
2 = 1.8 + 2r
2r=0.2
r=0.1 Ом

Answer 2

Calculation of Internal Resistance of the Current Source

To find the internal resistance of the current source, we can use Ohm's Law and the concept of voltage division.

Given: - Electromotive force (EMF) of the current source: 2V - Current flowing through the circuit: 2A - Voltage across the terminals of the current source: 1.8V

We can use the formula for voltage division to calculate the internal resistance of the current source.

The formula for voltage division is:

V = EMF * (R_internal / (R_internal + R_load))

Where: - V is the voltage across the terminals of the current source (1.8V in this case) - EMF is the electromotive force of the current source (2V in this case) - R_internal is the internal resistance of the current source (unknown) - R_load is the load resistance (which is not given in this case)

To solve for R_internal, we need to rearrange the formula:

R_internal = (V * R_load) / (EMF - V)

Since the load resistance is not given, we cannot calculate the exact value of the internal resistance without additional information.

Please provide the value of the load resistance to calculate the internal resistance of the current source accurately.