Chapter 24: Problem 23
A 5.80-
Short Answer
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Chapter 24: Problem 23
A 5.80-
These are the key concepts you need to understand to accurately answer the question.
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Get started for freeA cylindrical capacitor consists of a solid inner conducting core with radius
0.250 cm, surrounded by an outer hollow conducting tube. The two conductors
are separated by air, and the length of the cylinder is 12.0 cm. The
capacitance is 36.7 pF. (a) Calculate the inner radius of the hollow tube. (b)
When the capacitor is charged to 125 V,
Cell membranes (the walled enclosure around a cell) are typically about 7.5 nm
thick. They are partially permeable to allow charged material to pass in and
out, as needed. Equal but opposite charge densities build up on the inside and
outside faces of such a membrane, and these charges prevent additional charges
from passing through the cell wall. We can model a cell membrane as a
parallel-plate capacitor, with the membrane itself containing proteins
embedded in an organic material to give the membrane a dielectric constant of
about 10. (See
A parallel-plate air capacitor of capacitance 245 pF has a charge of magnitude
0.148
A parallel-plate capacitor has capacitance
A spherical capacitor is formed from two concentric, spherical, conducting shells separated by vacuum. The inner sphere has radius 15.0 cm and the capacitance is 116 pF. (a) What is the radius of the outer sphere? (b) If the potential difference between the two spheres is 220 V, what is the magnitude of charge on each sphere?
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