| A | B |
|---|
| What happens when a rubber rod is rubbed with a piece of fur, giving it a negative charge? | Electrons are added to the rod. |
| A repelling force occurs between two charged objects when the charges are of | like signs. |
| When a glass rod is rubbed with silk and becomes positively charged, | Electrons are removed from the rod.,  |
| In the diagram shown, the circles represent small balls that have electric charges. Ball 1 has a negative charge, and ball 2 is repelled by ball 1. Next, you see that ball 2 repels ball 3 and that ball 3 attracts ball 4. What is the electric charge on ball 4? | Ball 4 has a positive charge? |
| Which sentence best describes electrical conductors? | Electrical conductors have electric charges that move freely. |
| Which statement is the most correct regarding electric insulators? | Charges within electric insulators do not readily move. |
| The figure shown demonstrates charging by | Polarization,  |
| Both insulators and conductors can be charged by | Contact |
| Which is the most correct statement regarding the drawing of electric field lines? | Electric field lines never cross each other. |
| Electric field strength depends on | Charge and distance |
| Which of the following is not a characteristic of electrical potential energy? | It results from a single charge. |
| When a positive charge moves in the direction of the electric field, what happens to the electrical potential energy associated with the charge? | It decreases. |
