Question

1. Positively charged objects have gained protons?

2. A charged object can only attract other charged objects?

3. The electrostatic force between two charged objects is independent of the distance between them?

4. Static charges are produced through friction?

5. What is the difference between charging by contact and charging by induction?

6. Charges produced by induction always,.. A.) attract or B.) Repel?

7. Charges produced by contact always...A.) attract or B.) Repel?

Answer 1

1. False

A positively charged object has lost electrons

2. False

Any charged object can exert force upon other objects - both charged and uncharged objects

3. False

4. True

5. 1) Charging by friction is the only using which you can charge initially uncharged objects. However, only some combinations of materials work notably. One gets a positive and the other a negative charge.
Example: glass & silk.

2) Charging by induction is general, but has temporary effect. If you have something charged and put it close to your object, the opposite charge is attracted and the identical repelled to the other side of the object, so that the total charge is the same and only redistributed. If you want to actually charge the object using induction, you can collect the charge concentrated on one side using contact.

Example: paper pieces lifted by a glass bar

6. Attract

7. Repel