The author of the passage would most likely agree with statement D: "Insulators can be very useful." The passage discusses the properties of insulators, specifically mentioning rubber as a great insulator used for safety around metal wires, implying their usefulness.
Electrons cannot move easily through all substances. Some materials are insulators. They do not let electricity move through them easily. Rubber is a great insulator. It is often used around metal wires for safety. In the science lab, you can test if a material is an insulator by using it in a circuit and seeing if the current flows.
Which of the following statements would the author of this passage most likely agree with?
A
Electricians don’t need to know about insulators.
B
Electricity should not be investigated in the science lab.
C
Electrons are still a great mystery.
D
Insulators can be very useful.
1 answer