1) What is the difference between an electric insulator and an electric conductor? Give examples of materials that are electric insulators and examples that are electric conductors.
2) Explain what happens inside a conductor when a charged object is brought nearby. Explain what happens inside an insulator when a charged object is brought nearby. Use charge diagrams to illustrate your explanation.
3) Complete the charge diagrams shown below by adding plus and minus signs to the metal rod in the appropriate places as needed.
a) A positively charged object is brought near one end of a metal rod:
+___________________
b) A positively charged object is placed at each end of a metal rod:
+____________________+
c) A positively charged object is placed at each end of a metal rod but one has a greater charge than the other
+_________________________ ++