Which of the following statements about household circuits and the safe use of electricity is correct______
A. The connection of the switch in the picture is wrong
B. The electrical appliances in the home circuit should be connected in parallel
C. When using the test pen, your fingers should not touch the metal body of the pen tail
D. The blown fuse may be caused by the total power of the electrical appliance being too large
Answer:D
Which of the following statements about household circuits and the safe use of electricity is correct______
A. The connection of the switch in the picture is wrong B. The electrical appliances in the home circuit should be connected in parallel C. When using the test pen, your fingers should not touch the metal body of the pen tail D. The blown fuse may be caused by the total power of the electrical appliance being too large