Luces intersect each Lesson exercise
uswer the following questions
Define electric potential energy.
2. Explain the concept of electric potential difference.
2. What is the relation between electric potential energy and potential dif-
4. What is the other name given to a potential of a single point charge?
3. What are the uses of equipotential surfaces?
ference?
6. Find the magnitude of a charge that can be moved from infinity to a point
in an electric field where the potential is 20V, by spending 600J of work.
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Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.