27. Resistors & DC Circuits

Which of the following is always true about capacitors and batteries?

A wire is connected to the positive and negative plates of a capacitor. Electrons in the wire feel an attraction toward the positive plate of a capacitor, and a repulsion from the negative plate. What is true about the motion of these electrons?

An aluminum wire consists of the three segments shown in FIGURE P27.64. The current in the top segment is 10 A. For each of these three segments, find the b. Current density J. Place your results in a table for easy viewing.