1. If an electric current flows from one object to another, what can we say about the relative magnitudes of the electric potentials of the two objects? 4. An electron moving in a wire collides again and again with atoms and travels an average distance between collisions that is called the man free path. If the mean free path is less in some metals, what can you say about the resistance of these metals? For a given conductor, what can you do to lengthen the mean free path? 7. Will a lamp with a thick filament draw more current or less current than a lamp with a thin filament? Explain.

1. If an electric current flows from one object to another, what can we say about the relative magnitudes of the electric potentials of the two objects? 4. An electron moving in a wire collides again and again with atoms and travels an average distance between collisions that is called the man free path. If the mean free path is less in some metals, what can you say about the resistance of these metals? For a given conductor, what can you do to lengthen the mean free path? 7. Will a lamp with a thick filament draw more current or less current than a lamp with a thin filament? Explain.