Electricty

Question 1

What is the definition of electricity?

Answer 1

The flow of electrons through simple materials and devices

Question 2

Electrons leave an atom from what shell?

Answer 2

The Valance shell… outer most shell of electrons in an atom

Question 3

How does electricity flow?

Answer 3

From negative to positive

Question 4

What is the definition of current

Answer 4

The flow of electrons through a conductor

Question 5

What is the unit of measurement for current?

Answer 5

Amps

Question 6

What is the definition of voltage?

Answer 6

The potential difference between two point in an electric circuit

Question 7

What is the definition of resistance?

Answer 7

The opposition of current flow

Question 8

What is the unit of measurement for resistance

Answer 8

Ohms

Question 9

What is ohms law

Answer 9

The current in a circuit is directly proportional to the applied voltage and inversely proportional to the circuit resistance

    V —————- I   X     R

Question 10

What are the 4 requirements for a circuit

Answer 10

Power source
Conductors
Switch
Initiator/load

Question 11

What is a conductor

Answer 11

Any material that allows electrons to move freely(1-2 valence electrons)

Question 12

What is an insulator

Answer 12

Any material that does not allow electrons to move within it freely(8 valence electrons)

Question 13

What is the result of a short in a battery

Answer 13

The premature exhaustion of battery life

Heat

Possible battery explosion

Question 14

What happens to the total amps and volts when batteries are placed in series parallel

Answer 14

First add the volts in series and then add the total amperage in parallel

Question 15

What are the 6 methods of producing voltage

Answer 15

Friction
Pressure 
Heat
Light
Chemical reaction 
Magnesium

Question 16

A relay is an example of what type of switch

Answer 16

Electro magnetic switch (collapsing)

Question 17

What causes a collapsing circuit to function

Answer 17

Battery decay
Cutting the wrong wire
Anti-disturbance

Question 18

What causes movement of the contacts of a relay

Answer 18

Magnesium

Question 19

What do capacitors do

Answer 19

Store energy

Question 20

The work in a circuit is preformed by what?

Answer 20

Current or amps

Question 21

What’s the only thing that moves through a circuit

Answer 21

Electrons

Question 22

What moves electrons through a circuit

Answer 22

Voltage

Question 23

What 4 things affect resistance

Answer 23

Diameter
Length
Material
Temperature

Question 24

What two atomic particles make up an atom

Answer 24

Proton

Neutron

Question 25

What happens to batteries in series

Answer 25

Voltage increases current stays the same

Question 26

How do you add voltage with batteries in series

Answer 26

Count the small bars each is 1.5 volts

Question 27

How do you add amperage with batteries in parallel

Answer 27

For training 500 Milli amps is the standard for each battery

Question 28

How do you determine the resistance in a circuit with loads in parallel

Answer 28

(R1XR2)
—————-=Ohms
(R1+R2)

(20X20)
—————=10 Ohms
(20+20)

Question 29

What type of circuit is a relay considered

Answer 29

A collapsing circuit

Question 30

What causes a collapsing circuit to function

Answer 30

Battery decay
Cutting the wrong wire
Anti-disturbance

Question 31

What causes the movement of the relay contacts

Answer 31

The energizing and de-energizing of the coil

Question 32

In series switches which switch must be closed to conduct current

Answer 32

All of them

Question 33

In parallel switches which switches must be closed to conduct current

Answer 33

Any of them

Question 34

What is a semi conductor

Answer 34

A material that can be used as either a conductor or resistor (4 valence electrons)