What are the maximum and minimum values of unknown resistance `X`, which can be determined using the post office box shown in the fig.3.34?

What are the maximum and minimum values of unknown resistance X , which can be determined using the post office box shown in the figure?

In the figure shown below, the maximum and the minimum possible unknown resistance (X), that can be measured by the post office box are X_(max) and X_(min) respectively : (In this experiment we take out only one plug in arm AB and only one plus in arm BC, but in arm AD we can take out many plugs) :

In the figure shown below, the maximum and the minimum possible unknown resistance (X), that can be measured by the post office box are X_(max) and X_(min) respectively : (In this experiment we take out only one plug in arm AB and only one plus in arm BC, but in arm AD we can take out many plugs) :

For what value of unknown resistance X , the potential difference between B and D will be zero in the circuit shown in the figure ?

For what value of unknown resistance X , the potential difference between B and D will be zero in the circuit shown in the figure ?

What is the minimum resistance which can be made using five resistros each of 1/5?

Determine the maximum and minimum values of the function f(x)=2x^3-15x^2+36x+10