Question

Определите кпд источника тока, если ток короткого замыкания в 10 раз больше тока цепи. Ответ в процентах

Answer 1

Кпд=R/R+r
Ik=E/r    I=E/R+r
Ik/I=10=R+r/r
R=9*r
кпд=9*r/9*r+r=0,9=90%

Answer 2

Calculating Efficiency of a Current Source

To determine the efficiency of a current source, we can use the formula:

Efficiency (%) = (Output Power / Input Power) * 100

In this case, the current source's efficiency can be calculated based on the given information that the short-circuit current is 10 times greater than the circuit current.

The efficiency can be calculated as follows:

Efficiency (%) = ((I^2 * R) / (I^2 * R)) * 100

Where: - I = Circuit current - R = Load resistance

Given that the short-circuit current is 10 times greater than the circuit current, we can use this information to calculate the efficiency.

Calculation

Let's assume the circuit current as I and the load resistance as R. The short-circuit current is 10I.

Using the formula for efficiency, we get:

Efficiency (%) = ((I^2 * R) / ((10I)^2 * R)) * 100

Simplifying this expression, we get:

Efficiency (%) = ((I^2 * R) / (100I^2 * R)) * 100

Solving further:

Efficiency (%) = (1 / 100) * 100

Efficiency (%) = 1%

Therefore, the efficiency of the current source, given the provided information, is 1%. This means that only 1% of the input power is effectively converted into output power.