How can you make a potentiometer of given wire length more sensitive using resistance box?

Why do we prefer potentiometer of longer length for sensitive measurements?

The resistance of a potentiometer wire of length 10 m is 25 Omega . A resistance box and a 2 volt accumulator are connected in series with it. What resistance should be introduced in the box to have a potential drop of one microvolt per millimetre of the potentiometer wire ?

When a balance point is obtained in a potentiometer for finding the internal resistance of a cell, the current through the potentiometer wire is due to

A potentiometer wire of length 100 cm has a resistance of 10Omega. It is connected in series with a resistance and an accumulator of emf 2V and negligible internal resistance. A source of emf 10 mV is balanced against a length of 40 cm of the potentiometer wire. what is the value of the external resistance?

There is a potentiometer wire of length 1200 cm and 60 mA current is flowing in it. A battery of emf 5V and internal resistance of 20 ohm is balanced on potentiometer wire with balancing length 1000 cm. find the resistance of the potentiometer wire

What do you understand by sensitiveness of a potentionmeter and how can you increase the sensitiveness of potentiometer?

How will you use potentiometer to determine internal resistances of a cell?