1. How do you find the work done in moving a test charge by an infinitesimal distance in an electric field?
2. What is the amount of work involved in moving a test charge normal to the electric field?
3. What is the physical interpretation of the line integral of E between two points A and B?
4. How do you find the approximate value of the line integral of a vector along a given path?
5. How do you find the exact value of the line integral?
6. What is the physical significance of the line integral of the earth's gravitational field intensity?