Electrical

Question 1

What are the 4 effects of Electrical Current?

Answer 1

Physiological
Heating
Magnetism
Chemical

Question 2

What is the Physiological effect? in relation to current

Answer 2

the result of an electrical current passing through a living organism

Question 3

what is the cause of heating in relation to current?

Answer 3

resistance

Question 4

What electrical current effect am i?

An electrical current flowing in a conductor causes the conductor to be surrounded by a magnetic field

Answer 4

Magnet effect

Question 5

What is the rule in remembering the direction of current flow and magnet flow in a conductor

Answer 5

Right Hand
Right Thumb
rule

Question 6

What is the most useful of all the electric current effects

Answer 6

magnet field, caused by the magnetism effect

Question 7

an electric current can flow in certain types of liquids called _____

Answer 7

electrolyte

Question 8

____ are atoms with a positive or negative charge

Answer 8

Ions

Question 9

if an Ion has less than its usual number of electrons, is it positively of negatively charged

Answer 9

Positively

Question 10

What takes place when 2 different metals react in their ecosystem

Answer 10

Electrolyte Corrosion

Question 11

what are the 3 types of environments that Electrolyte corrosion can take place

Answer 11

Atmospheric - due to air pollution
immersion - when metals are wet
Structural - results from immersions with metals

Question 12

what are the 3 main process of Electrolyte Corrosion

Answer 12

Oxidation
Reduction
Rust Formation

Question 13

What is acceleration due to gravity?

Answer 13

9.8m/s^2

Question 14

What is the ability or capability to do work?

Answer 14

Energy

Question 15

what unit does Work and Energy ‘both’ use?

Answer 15

Joule

Question 16

Work can be converted from what? (5)

Answer 16

Electrical 
Chemical
Magnetic
Heat
Mechanical

Question 17

___ is the rate in which work is done at

Answer 17

Power

Question 18

what is Current?

Answer 18

the flow of electrons

Question 19

the higher the current….

Answer 19

the greater the amount of electrons flowing in the circuit

Question 20

doubling the Voltage causes the power the increase by how much?

Answer 20

4

Question 21

Doubling the current causes the power to increase by how much?

Answer 21

4

Question 22

EMF sources include?

name 3

Answer 22

friction
heat
light
chemical, etc

Question 23

what effect is this?

some types of quartz crystals produce an EMF when subject to movement

Answer 23

Piezoelectric

Question 24

what effect is used in gas igniters, lighters and microphones

Answer 24

piezoelectric effect

Question 25

the piezoelectric effect is a ____ to electrical effect

Answer 25

mechanical, due to the movement

Question 26

Electromagnetic effect is an _____ to electrical effect

Answer 26

mechanical

Question 27

Thermoelctric effect is an ____ to electrical effec

Answer 27

radiant, due to the heat (can be remembered from the word thermnomiter

Question 28

when 2 dissimilar metals are joined together at one end, an EMF i produced when there junction is heated. what effect is this

Answer 28

Thermoelectric effect

Question 29

Photoelectric effect is ____ to electrical

Answer 29

radiant

Question 30

what effect is it when light falls on certain light sensitive materials and an EMF is produced

Answer 30

photoelectric effect

Question 31

Chemical to electric is an ___effect

Answer 31

electrochemical

Question 32

EMF source effect | consists of 2 dissimilar metals immersed in electrolyte

Answer 32

chemical to electric

Question 33

the principle of conservation states:

Answer 33

energy can not be created or destroyed

Question 34

Machine power. | losses =

Answer 34

Pin-Pout

Question 35

motors and generators are always rated in terms of thee ______________

Answer 35

Full load out put power

Question 36

what is an explination for losses with power

Answer 36

resistance

Question 37

know how to draw a fixed variable resistor

Answer 37

down ward arrow on resistor

Question 38

Temperature dependent resistors change...

Answer 38

their value with a change in temperature

Question 39

draw a TDP symbol

Answer 39

resistor with a hockypunt in it

Question 40

PTC stands for

Answer 40

Positive Temperature Coefficient

Question 41

NTC stands for

Answer 41

Negative Temperature Coefficient

Question 42

With PTC when temperature goes up, the resistance goes ______

Answer 42

up

Question 43

with NTC when temperature goes up, resistance goes ___

Answer 43

down

Question 44

what does VDR stand for

Answer 44

Voltage dependent resistors

Question 45

VDR are used to...

Answer 45

protect a circuit from a voltage surge

Question 46

LDR stand for?

Answer 46

Light dependent resistors

Question 47

Draw a LDR

Answer 47

resistor with 2 diagonally arrows

Question 48

What are the 4 factors effecting resistance

Answer 48

length temperature type of material CSA

Question 49

Length is Inversely or directly proportional to Resistance?

Answer 49

directly

Question 50

CSA is Inversely or directly proportional to Resistance?

Answer 50

inversely proportional | R1/R2 = A2/A1

Question 51

what does ZTC stand for

Answer 51

Zero Temperature Coefficient | resistance doesn't change no matter what