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Flashcards in RT 205 Electricity Deck (28):
1

Formula for Ohm's Law

V=IR
V= Potential Difference (Volts)
I= Current (Amperes)
R= Resistance (Ohms)

2

Formula for Power Law

P=IV
P= Power (Watts)
I= Current (Amperes)
V= Voltage (volts)

3

The study of the distribution of fixed charges (electrons) that are not at rest

Electrostatics

4

Electron charges being added and subtracted from an object

Electrification

5

First Law of electrostatics

Repulsion-Attraction - Like charges repel, negative charges attract

6

Second Law of electrostatics

Inverse square law - Force between two charges directly proportional to product of their magnitudes and inversely proportional to square of distance between them.

7

Third Law of electrostatics

Distribution - Charges reside on the external surface of conductors

8

Fourth Law of electrostatics

Concentration - The greatest concentration of charges will gather at sharpest area of curvature

9

Fifth Law of electrostatics

Movement - Only negative charges move along solid conductors.

10

Electrical force is proportional to the product of the electrical charge and inversely proportional to the square of the distance.

Coulomb's Law

11

Formula for Coulomb's Law

F= k (q1 x q2/d^2

F= Force
k= 9.00 x 10^9 Nm^2/C^2
q1= electrified charge of object 1
q2= electrified charge of object 2
d^2= distance between the two objects

12

The fundamental charge is the electrical chare on an charge on an electron and has a magnitude of ________________.

1.6 x 10^-19 C

13

A coulomb is the charge resulting from the transfer of ______________, which is the charged carried by an electron.

6.24 x 10^18

14

Have a small fraction of their electrons, which are not bound to atoms, which move freely around.

Conductor

15

A substance, usually a solid chemical element or compound, that can conduct electricity under some condition, but not others.

Semiconductor

16

Substances that inhibit the flow of electrons

Insulators

17

Conventional Current

Electrons move from areas of high to low concentration

18

Conventional Electric Flow

Going from a positive to a negative pole

19

Conventional Electron Flow

Going from negative to a positive pole

20

AC Sine wave-

Electrons flow in one direction and than the other.

21

DC Sine wave -

Electrons travel in one direction

22

1 Amp = ___________

1 Amp = 1 Coulomb/sec

23

AC Current = ____________ or ____________

AC Current = 60 cycles/sec = 60 Hz

24

Voltmeter

Measures the voltage across a circuit

25

Ammeter

Measures current

26

Ohmmeter

Measures resistance of one resistor in a circuit

27

1 Voltage = _____________

1 Voltage = 1 J/C

28

The force at which electrons travel is best described by _____________, ______, and _________.

Potential difference, EMF, and voltage