Chapter 26: Q. 18 (page 738)
How much charge does a battery transfer from the negative to the positive terminal while doing of work?
The charge transferred is
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A typical cell has a layer of negative charge on the inner surface of the cell wall and a layer of positive charge on the outside surface, thus making the cell wall a capacitor. What is the capacitance of a -diameter cell with a -thick cell wall whose dielectric constant is ? Because the cell’s diameter is much larger than the wall thickness, it is reasonable to ignore the curvature of the cell and think of it as a parallel-plate capacitor.
The electric potential is at point A near a uniformly charged sphere. At point B, farther away from the sphere, the potential has decreased by 0.16 mV. How far is point A from the center of the sphere?
Figure EX26.12 is a graph of . Draw the corresponding graph of
Capacitors and are each charged to , then disconnected from the battery without changing the charge on the capacitor plates. The two capacitors are then connected in parallel, with the positive plate of connected to the negative plate of and vice versa. Afterward, what are the charge on and the potential difference across each capacitor?
What are the charge on and the potential difference across each capacitor in FIGURE ?
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