Question

how the presence of megnatic field can be detected​

Answer 1

Answer:

A compass can be used to detect presence of magnetic field as it will deflect from its N-S direction to direction if magnetic field at that point.

Answer 2

Answer:

Java program:Draw UML Class Diagram for the following case study, Students with odd sapid will also implement this case study:

You as a developer is requested to create a simple console-based application for teachers to create quizzes for the students. Teacher just want to manage his/her quizzes and questions. System should provide the functionality to add new quiz and then add some questions to that quiz. All the questions would be MCQs. For each question, Teacher will store the question number, question details, options of the question