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Chapter 26: Q. 6 (page 737)
Two flat, parallel electrodes apart are kept at potentials of. Estimate the electric field strength between them.
The electric field strength is
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a. Find an expression for the capacitance of a spherical capacitor, consisting of concentric spherical shells of radii (inner shell) and (outer shell).
b. A spherical capacitor with a gap between the shells has a capacitance of . What are the diameters of the two spheres?
What is the equivalent capacitance of the three capacitors in Figure EX26.27?
a. Which point in Figure EX26.5, 'A' or 'B', has a larger electric potential?
b. What is the potential difference between 'A' and 'B'?
Engineers discover that the electric potential between two electrodes can be modeled as , where is a constant, is the distance from the first electrode in the direction of the second, and is the distance between the electrodes. What is the electric field strength midway between the electrodes?
The label rubbed off one of the capacitors you are using to build a circuit. To find out its capacitance, you place it in series with a capacitor and connect them to a battery. Using your voltmeter, you measure across the unknown capacitor. What is the unknown capacitor's capacitance?
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