Deck 5: Capacitors and Rc Time Constants

Question 1

What is the standard unit of measure for capacitance and how is it defined?

Answer 1

The standard unit of measurement for capacitance is the farad. This unit of measurement is defined as follows:
A capacitor has a capacitance of one farad when a change of one volt across its plates results in a charge movement of one coulomb.

Question 2

Capacitance and ____________________ values are usually written directly on large ac oil-filled paper capacitors.

Answer 2

voltage

Question 3

All capacitor manufacturers use a standard set of color codes.

Answer 3

False

Question 4

____________________ is the property of a circuit, or circuit component, that allows it to store electrical energy in electrostatic form.

Question 5

____________________ capacitors consist of a ceramic dielectric and silver plates.

Question 6

A positive temperature coefficient indicates that the capacitance will decrease with an increase in temperature.

Question 7

Describe why having firmly held electrons in their electron shell makes a material a good insulator.

Question 8

Explain how to connect electrolytic capacitors.

Question 9

The ____________________ capacitor has two metal plates with an air dielectric.

Question 10

Describe how the value, such as "105K" marked on a film-type capacitor can be read.

Question 11

If an insulating material, known as a dielectric, is placed between two plates of a conducting material, the resulting assembly is a(n) ____________________.

Question 12

Good conductors have many free electrons in their structure.

Question 13

Once charged, a capacitor can remain charged forever.

Question 14

Explain the RL exponential current curve.

Question 15

Any inductance coil is really a combination of inductance and resistance in series.