4th Periodic Test

Question 1

– Introduce the first electric battery

Answer 1

Count Alessandro Volta

Question 2

Invented Galvanometer, the Unit of current was named after him ( Ampere)

Answer 2

Andre Marie Ampere

Question 3

Introduce Ohm’s law

Answer 3

Georg Simon Ohm

Question 4

introduce the principle of generator , Unit of Capacitance was named after him( Farad)

Answer 4

Michael Faraday

Question 5

, Unit of Capacitance

Answer 5

Farad

Question 6

Sources of electricity

Answer 6

Photo voltaic cell store small amount of electrical charge
Battery
Generator

Question 7

2 types of battery

Answer 7

Primary and Secondary

Question 8

Disposable battery

Answer 8

Primary

Question 9

Convert mechanical energy to electrical energy

Answer 9

Generator

Question 10

Conductor of electricity

Answer 10

Copper. Aluminum, Silver

Question 11

– most commonly used

Answer 11

Copper

Question 12

Second best conductor

Answer 12

Aluminum

Question 13

Best conductor of electricity

Answer 13

Silver

Question 14

uses heat coming from the sun and the best application is in low lying areas

Answer 14

Solar power plant

Question 14

uses strong flow of water

Answer 14

Hydroelectric Power plant

Question 15

uses heat coming from the earths surface usually exist near active volcano

Answer 15

Geothermal power plant

Question 16

uses strong wind and large turbines usually applicable in areas with strong winds

Answer 16

Wind power plant

Question 17

Uses radiation to generate electricity

Answer 17

Nuclear power plant

Question 18

uses fossil fuels such as , coal gas, and diesel

Answer 18

fossil fuel power plant

Question 19

limit the flow of current ( The condition of the resistor is determined by testing using a multi tester and using resistor color coding)

Answer 19

Resistors

Question 20

2 types of resistors

Answer 20

Fixed and Variable

Question 21

the value is fixed

Answer 21

Fixed resistor

Question 22

Value can be varied

Answer 22

Variable resistor

Question 23

stores electrical energy

Answer 23

Capacitor

Question 24

3 types of cpacitor

Answer 24

Fixed Polarized Fixed non-polarized Variable Capacity

Question 25

fixed value with polarity

Answer 25

Fixed Polarized

Question 26

fixed value without polarity

Answer 26

Fixed non-polarized

Question 27

the value can be change

Answer 27

Variable Capacity

Question 28

the component that sends signal to the circuit on how it will function

Answer 28

transistor

Question 29

allows electric current to pass in one direction

Answer 29

diode

Question 30

indicates if the circuit is on or off

Answer 30

Led

Question 31

functions as a resistor, capacitor and a transistor

Answer 31

IC

Question 32

converts electrical signal to sound waves

Answer 32

Microphone

Question 33

V

Answer 33

IR

Question 34

I

Answer 34

V/R

Question 35

R

Answer 35

V/I

Question 36

RT symbol

Answer 36

Ohms

Question 37

Steps in resistor color coding

Answer 37

1. Copy the numerical value of the first 2 colors( based on the chart) 2. The third color represents the number of zero’s 3. The last color is the tolerance

Question 37

IT symbol

Answer 37

A (Ampere)

Question 38

V symbol

Answer 38

V

Question 39

Gold Tolerance

Answer 39

±5% or .05

Question 40

Silver Tolerance

Answer 40

±10% or .1

Question 41

Black

Answer 41

0

Question 42

Brown

Answer 42

1

Question 43

Red

Answer 43

2

Question 44

ORange

Answer 44

3

Question 45

Yellow

Answer 45

4

Question 46

Green

Answer 46

5

Question 47

Blue

Answer 47

6

Question 48

Violet

Answer 48

7

Question 49

Gray

Answer 49

8

Question 50

White

Answer 50

9

Question 51

when solving for max and min the final name shoule be?

Answer 51

ohms

Question 52

Capacitor Decoding ( Ceramic Capacitor)how many defcimal places should u move

Answer 52

6 decimal places to the left.

Question 53

IT Formula

Answer 53

I1=I2=I3 … or VT/RT

Question 53

RT Formula

Answer 53

R1+R2+R3 …

Question 54

VT Formula

Answer 54

V1+V2+v3 …

Question 55

ADD all the computed voltages to check if your answer is correct ( Should be equal to the given voltage)

Answer 55

True

Question 59

Unit of resistance

Answer 59

Ohm

Question 60

is an electromechanical measuring instrument for electric current.

Answer 60

Galvanometer