There are 4 questions in the exam on this topic.
Syllabus Sections:-
Q50
Electricity
8A1, 8A2, 8A6
Q51
Working with RF
8D1
Lightning
8E1
Q52
Working Mobile and Portable
8F4
Q52
Working Mobile and Portable
8F5
Q53
Working Mobile and Portable
8F6, 8F7