PHYS102- CHAPTER 26 EXAM SOLUTION MANUAL (RATED A+)
A conductor is in the shape of a box with dimension L × W × H. Where will the charge density be the greatest? - Answers at the corners
A parallel plate capacitor has plates 0.45 m2 in area and a separation of 3.5 mm. A mica dielectric (K = 5.0...
A conductor is in the shape of a box with dimension L × W × H. Where will the charge density be the
greatest? - Answers at the corners
A parallel plate capacitor has plates 0.45 m2 in area and a separation of 3.5 mm. A mica dielectric (K =
5.0) is placed between the plates. What is the capacitance? - Answers 5.7 × 10-9 F
Which of the following happens if the charge on a parallel plate capacitor is increased? - Answers The
potential difference is increased.
For capacitors connected in parallel, the charge on each capacitor will be equal. - Answers False
The dielectric strength of a dielectric is higher than that of air. - Answers True
The capacitance of a given capacitor will be higher if the separation of the plates is reduced without
changing the dielectric. - Answers True
The amount of charge that can be placed on a spherical conductor is a function of its size and shape but
not of the surrounding medium. - Answers False
If a conductor has a capacitance of one farad, a transfer of one coulomb of charge to the conductor will
increase its potential by one volt. - Answers True
If the charge on a capacitor is doubled, the potential energy will be quadrupled. - Answers True
Placing a dielectric between the plates of a capacitor reduces the electric field between the plates. -
Answers True
Flat regions of an isolated conductor have greater surface charge densities than pointed regions. -
Answers False
The total capacitance of two capacitors connected in series is less than that of either capacitor alone. -
Answers True
For capacitors connected in parallel, the voltage across each capacitor is the same as that across the
source. - Answers True
Dielectrics are usually good conductors of electricity. - Answers False
The dielectric constant is also the relative permittivity. - Answers True
If the voltage across a capacitor is changed, the capacitance will change. - Answers False
Which of the following is not a reason to use a dielectric? - Answers Allows electrons to flow easier from
the positive to negative plate.
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