Collection of Problems received from Class 12 Physics

These problems were posted by Geena. Hope that we will be able to post the answers to these questions soon; each in a separate post. By the time visitors can attempt to post their answers as comments to this post. (Only selected posts will be published)
 
Please note that the answers are not published until the […]

DERIVATION OF CELLS IN SERIES AND PARALLEL

jaipreet singh asked: “can you please tell me the DERIVATION OF CELLS IN SERIES AND PARALLEL?” Answer: I am posting here the simplified treatment to calculate the current in a circuit with combination of cells. In this derivation it is assumed that all cells have the same EMF and same internal resistance. CELLS IN SERIES…… Continue reading DERIVATION OF CELLS IN SERIES AND PARALLEL

An Exemplary Viva Voce (CBSE Class XII Physics Practical)

(Assuming that the student was assigned the experiment “To determine the internal resistance of a cell using potentiometer”) Examiner (E): What was the experiment allotted to you? Students(S): Sir, I was assigned the experiment to determine the internal resistance of a primary cell using potentiometer. E: OK, Tell me the principle of a potentiometer S:…… Continue reading An Exemplary Viva Voce (CBSE Class XII Physics Practical)