Question

При каком сопротивлении внешней электрической цепи сила тока в ней будет 2А , если при коротком замыкания источника электрической энергии с ЭДС 1,8В сила тока в цепи 6А

Answer 1

Внутреннее сопротивление источника r= 1,8 / 6 = 0,3 Ом

следовательно R+r= 1,8 / 2 = 0,9 Ом

тогда R=0,9-0,3= 0,6 Ом

внешнее сопротивление цепи = 0,6 Ом

Answer 2

Calculating Current in the Circuit

To calculate the resistance at which the current in the circuit will be 2A, we can use Ohm's law, which states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) between them. The formula for Ohm's law is:

V = I * R

Where: - V = voltage (in volts) - I = current (in amperes) - R = resistance (in ohms)

Given that the voltage (V) is 1.8V and the current (I) is 6A during a short circuit, we can use these values to calculate the resistance (R) in the circuit.

Using Ohm's law, we can rearrange the formula to solve for resistance:

R = V / I

Substituting the given values: R = 1.8V / 6A = 0.3Ω

So, during a short circuit, the resistance in the circuit is 0.3Ω.

Now, to find the resistance at which the current in the circuit will be 2A, we can rearrange Ohm's law to solve for resistance:

R = V / I

Substituting the given current (I = 2A) and the voltage (V = 1.8V): R = 1.8V / 2A = 0.9Ω

Therefore, the resistance at which the current in the circuit will be 2A is 0.9Ω.

Cited Sources

1. Source Nov 28, 2019: "I, R, r ... 1) U." 2. Source "R1=50 I1=0,2, R2=110 - I2=0,1. 1) 0,3; 2) 0..."

I hope this helps! If you have any further questions, feel free to ask.