Give the basic principle of potentiometer.

Give the basic principle of chromatography.

A potentiometer wire of length 100 cm has resis tance of 10 ohms. It is connected in series with a resistance R and a cell of emf 2V and negligible in ternal resistance. The circuit is as shown below. - What is the principle of a potentiometer ?

What is the basic principle of working of a transformer ?

What is the basic principle of tissue culture?

State principle of floatation

Give the principle of estimation of nitrogen by Dumas method.

lon exchange process is commonly employed for large scale production of soft water.What is the basic principle involved in ion exchange method of softening water?

Write the working principle of induction heater.

For many purposes, it is necessary to change an alternating voltage from one value to another. This is done with a transformer. The basic principle behind a transformer is