1. The current in a battery with cells connected in parallel equals the

(a) Current in one cell.

(b) Internal resistance.

(c) Sum of the currents in each cell.

2. Examples of dry cells include

(a) lead–zinc cells.

(b) nickel–cadmium cells.

(c) carbon–zinc cells.

(d) Fuel cells.

3. In your own words, describe how materials can become charged by electrification.

4. What particles make up an atom?

5. What particles are located in the nucleus (center) of an atom?

6. Where are electrons located in an atom?

7. What are the two types of charge? What atomic particle carries each type of charge?

8. Describe the process of charging an electroscope by conduction.

9. Describe the process of charging an electroscope by induction.

10. In your own words, describe Coulomb’s law of electrostatics.