If you are not sure whether an electrical circuit is safe before switching on, you should:

  1. use a higher voltage
  2. touch the wires
  3. ask the instructor to check it
  4. switch on and see
Answer

C) ask the instructor to check it

Check first. SLO P-11-N-05 · Application

Physics MCQ · More Experimental Skills and Data Analysis MCQs · Practise