ITEC 220 Final Flashcards Preview

Module 4, Lesson 3 > ITEC 220 Final > Flashcards

Flashcards in ITEC 220 Final Deck (16):
1

Capacitance

The ability of a device to store electrical energy in the form or an electrical charge

2

Capacitor

A device consisting of two plates separated by an insulating material

3

Dielectric

The material that separates the plates of a capacitor

4

Farad

The basic unit of measure of capacitance of a capacitor

5

When the capacitance value is increased, how is the charge affected?

The charge increases

6

If the capacitance value of a capacitor is doubled, and the applied voltage is halved, how is the charge affected?

Nothing happens

7

Dielectric constant

The ability of a material to concentrate electric flux lines.

8

Capacitance of a capacitor is determined by three factors

Type of dielectric used, plate area, and distance between plates

9

1 farad equals

10 to the 6th microfarads

10

I farad equals

10 to the 12th picrofarads

11

Working voltage or breakdown voltage

The potential between the plates of a capacitor at which the dielectric becomes a conductor

12

A capacitor is rated at 2 microfarads. What is the capacitance if the plate area is doubled?

4 microfarads

13

If the dielectric of a capacitor is changed from paper to ceramic, what is the effect on capacitance?

The capacitance increases because ceramic can handle more flux lines

14

Decreasing the distance between the plates has what effect on capacitance?

The capacitance will increase

15

What form of energy is stored in the dielectric of a capacitor

Coulomb

16

How many picofarads are in a microfarad

1,000,000