Answer:By specifying conditions, you can create custom filters that narrow down the data in the exact way that you want. You do this by building a filter. If you've ever queried data in a database, this will look familiar to you. Point to either Number Filters or Text Filters in the list.
Electro magnetism theory cover the basic principle of electro magnetism : experimental basis. Electromagnetism is defined as an attraction between two partical.
