Define power. What is its relation with work ?

Define work.

Define relative refractive index. What is its relation with velocity of light?

Define mobility of a charge carrier.What is its relation with relaxation time?

What is the practical unit of charge? What is its relation with 1 esu of charge?

Define RQ. What is its value for fats?

Define R.Q. What is its value for fats ?

Define R.Q. What is its value for fats?

What are the units of electrical power ? What are the relations of power with potential difference , current and resistance ?

Define the term thrust and pressure. What is the relation between them?

Define Poynting Vector? What is its unit?