Analyze each situation and determine the type of charge possessed by the objects as a result of the charging process. Identify the type of charge and give a brief explanation of your answer based on your understanding of charging by friction, conduction and induction. 1.A glass plate is rubbed with a cotton cloth. Cotton has a greater affinity for electrons than glass.

• Question 1:Once rubbed, what is the charge on the glass plate? (positive, negative, neutral)
• Explain. ___________________________________
• What is the charge on the cloth? (positive, negative, neutral)
• Explain. ___________________________________

2.A neutral aluminum tin is brought near and touched to a negatively-charged metal sphere.

• Question 1: After touching, what is the charge on the tin? (positive, negative, neutral)
• Explain. ___________________________________
• What is the charge on the metal sphere? (positive, negative, neutral) (positive, negative, neutral)
• Explain. ___________________________________

3.A negatively-charged balloon is brought near a neutral, conducting sphere (mounted on an insulating stand). The sphere is touched by a person and the balloon is moved away.

• Question 1: What is the charge on the balloon after? (positive, negative, neutral)
• Explain. ___________________________________
• What is the charge on the metal sphere? (positive, negative, neutral) (positive, negative, neutral)
• Explain. ___________________________________

4.A neutral metal can is mounted on a foam stand. A positively charged balloon is brought nearby. The can is touched on the opposite side.

• Question 1: What is the charge on the balloon after? (positive, negative, neutral)
• Explain. ___________________________________
• Question 2: What is the charge on the can? (positive, negative, neutral)
• Explain. ___________________________________

5.Three neutral, metal cans - mounted on insulating stands - are touching. A negatively-charged balloon is brought near Can C. Can B is then removed.

• Question 1: What is the charge on Can A? (positive, negative, neutral)
• Explain. ___________________________________
• Question 2: What is the charge on Can C? (positive, negative, neutral)
• Explain. ___________________________________